/home/llmeval/.local/share/uv/tools/cubbi/lib/python3.12/site-packages/click/core.py:1213: UserWarning: The parameter -m is used more than once. Remove its duplicate as parameters should be unique.
  parser = self.make_parser(ctx)
/home/llmeval/.local/share/uv/tools/cubbi/lib/python3.12/site-packages/click/core.py:1206: UserWarning: The parameter -m is used more than once. Remove its duplicate as parameters should be unique.
  self.parse_args(ctx, args)
Using UID: 1000, GID: 1000
Forwarding environment variable OPENROUTER_API_KEY to container
Mounting local directory /home/llmeval/llmeval/runs/run_20260114_150051/task9_cpp_footguns/openrouter-google-gemini-2.5-flash-lite-preview-09-2025/workspace to /app
No project_name provided - skipping configuration directory setup.
Session created successfully!
Session ID: 0b6cad71
Image: opencode
Executing command and waiting for completion...
Container will exit after command completes.
Command logs:
Initializing opencode v1.0.0
Setting up user 'cubbi' with UID: 1000, GID: 1000
Setting up standard directories
Created directory: /app
Created directory: /cubbi-config
Created directory: /cubbi-config/home
Creating /home/cubbi as symlink to /cubbi-config/home
Created directory: /cubbi-config/home/.local
Copied /root/.local/bin to user directory
Running opencode-specific initialization
Added litellm custom provider with 158 models to OpenCode configuration
Added openrouter standard provider with 347 models to OpenCode configuration
Set default model to openrouter/google/gemini-2.5-flash-lite-preview-09-2025
Updated OpenCode configuration at /home/cubbi/.config/opencode/config.json with 2 providers
No MCP servers to integrate
--- Executing initial command ---
Executing user command:
    if [ -f install.sh ]; then bash install.sh; fi;
    echo "--- TASK BEGIN ---"; cat task.md; echo "--- TASK END ---";
    cd input && opencode run --print-logs < ../task.md

Executing as cubbi: sh -c
    if [ -f install.sh ]; then bash install.sh; fi;
    echo "--- TASK BEGIN ---"; cat task.md; echo "--- TASK END ---";
    cd input && opencode run --print-logs < ../task.md

Installing Docker...
Docker installed
C++ compilation will use gcc:13 Docker image to avoid host path conflicts
--- TASK BEGIN ---
# C++ Bug Hunt: Fix Subtle Errors

You'll find several C++ files in the current directory. Each file contains realistic code that does something useful, but has ONE subtle bug.

## Your Task

Fix the bug in each file so that:
1. The code compiles without warnings (`-Wall -Wextra -Werror`)
2. The code passes sanitizer checks (ASan/UBSan)
3. The code produces the correct expected output

## Files

- `virtual_destructor.cpp` - Plugin system with memory management
- `reference_to_temporary.cpp` - Configuration system
- `iterator_invalidation.cpp` - Event queue processor
- `unsigned_underflow.cpp` - Ring buffer implementation
- `dangling_cstr.cpp` - Log formatting system
- `init_order.cpp` - Coordinate system with units
- `off_by_one.cpp` - Matrix border detection
- `int_overflow.cpp` - Bulk price calculator

Each file is independent. Fix bugs **IN PLACE** (modify the files in the same directory).


PS: You are currently working in an automated system and cannot ask any question or have back and forth with an user.
--- TASK END ---
INFO  2026-01-14T16:31:01 +628ms service=default version=1.1.17 args=["run","--print-logs"] opencode
INFO  2026-01-14T16:31:01 +2ms service=default directory=/app/input creating instance
INFO  2026-01-14T16:31:01 +1ms service=project directory=/app/input fromDirectory
INFO  2026-01-14T16:31:01 +10ms service=storage index=0 running migration
ERROR 2026-01-14T16:31:01 +2ms service=storage index=0 failed to run migration
INFO  2026-01-14T16:31:01 +0ms service=storage index=1 running migration
INFO  2026-01-14T16:31:01 +5ms service=default directory=/app/input bootstrapping
INFO  2026-01-14T16:31:01 +9ms service=config path=/home/cubbi/.config/opencode/config.json loading
INFO  2026-01-14T16:31:01 +55ms service=config path=/home/cubbi/.config/opencode/opencode.json loading
INFO  2026-01-14T16:31:01 +1ms service=config path=/home/cubbi/.config/opencode/opencode.jsonc loading
INFO  2026-01-14T16:31:01 +6ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","@opencode-ai/plugin@1.1.17","--exact"] cwd=/home/cubbi/.config/opencode running
INFO  2026-01-14T16:31:01 +621ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd)

installed @opencode-ai/plugin@1.1.17

3 packages installed [583.00ms]
 stderr=Resolving dependencies
Resolved, downloaded and extracted [12]
Saved lockfile
 done
INFO  2026-01-14T16:31:01 +0ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","install"] cwd=/home/cubbi/.config/opencode running
INFO  2026-01-14T16:31:01 +33ms service=bun code=0 stdout=bun install v1.3.5 (1e86cebd)

Checked 3 installs across 4 packages (no changes) [10.00ms]
 stderr= done
INFO  2026-01-14T16:31:01 +16ms service=plugin name=CodexAuthPlugin loading internal plugin
INFO  2026-01-14T16:31:01 +3ms service=plugin path=opencode-copilot-auth@0.0.12 loading plugin
INFO  2026-01-14T16:31:01 +4ms service=bun pkg=opencode-copilot-auth version=0.0.12 installing package using Bun's default registry resolution
INFO  2026-01-14T16:31:01 +0ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","--force","--exact","--cwd","/home/cubbi/.cache/opencode","opencode-copilot-auth@0.0.12"] cwd=/home/cubbi/.cache/opencode running
INFO  2026-01-14T16:31:02 +108ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd)

installed opencode-copilot-auth@0.0.12

1 package installed [98.00ms]
 stderr=Resolving dependencies
Resolved, downloaded and extracted [4]
Saved lockfile
 done
INFO  2026-01-14T16:31:02 +10ms service=plugin path=opencode-anthropic-auth@0.0.8 loading plugin
INFO  2026-01-14T16:31:02 +1ms service=bun pkg=opencode-anthropic-auth version=0.0.8 installing package using Bun's default registry resolution
INFO  2026-01-14T16:31:02 +0ms service=bun cmd=["/opt/node/lib/node_modules/opencode-ai/node_modules/opencode-linux-x64/bin/opencode","add","--force","--exact","--cwd","/home/cubbi/.cache/opencode","opencode-anthropic-auth@0.0.8"] cwd=/home/cubbi/.cache/opencode running
INFO  2026-01-14T16:31:03 +916ms service=bun code=0 stdout=bun add v1.3.5 (1e86cebd)

+ opencode-copilot-auth@0.0.12

installed opencode-anthropic-auth@0.0.8

14 packages installed [907.00ms]
 stderr=Resolving dependencies
Resolved, downloaded and extracted [50]
Saved lockfile
 done
INFO  2026-01-14T16:31:03 +59ms service=bus type=* subscribing
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INFO  2026-01-14T16:31:03 +2ms service=lsp serverIds=deno, typescript, vue, eslint, oxlint, biome, gopls, ruby-lsp, pyright, elixir-ls, zls, csharp, fsharp, sourcekit-lsp, rust, clangd, svelte, astro, jdtls, kotlin-ls, yaml-ls, lua-ls, php intelephense, prisma, dart, ocaml-lsp, bash, terraform, texlab, dockerfile, gleam, clojure-lsp, nixd, tinymist, haskell-language-server enabled LSP servers
INFO  2026-01-14T16:31:03 +7ms service=bus type=command.executed subscribing
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INFO  2026-01-14T16:31:03 +10ms service=session id=ses_442a755fdffe5HA11EGv1mj8vm version=1.1.17 projectID=global directory=/app/input title=New session - 2026-01-14T16:31:03.170Z time={"created":1768408263170,"updated":1768408263170} created
INFO  2026-01-14T16:31:03 +5ms service=bus type=session.created publishing
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INFO  2026-01-14T16:31:03 +17ms service=provider status=started state
INFO  2026-01-14T16:31:03 +6ms service=models.dev file={} refreshing
INFO  2026-01-14T16:31:03 +42ms service=provider init
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INFO  2026-01-14T16:31:03 +22ms service=provider providerID=openrouter found
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INFO  2026-01-14T16:31:03 +0ms service=provider status=completed duration=88 state
INFO  2026-01-14T16:31:03 +5ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=true agent=title stream
INFO  2026-01-14T16:31:03 +1ms service=provider status=started providerID=openrouter getSDK
INFO  2026-01-14T16:31:03 +0ms service=provider providerID=openrouter pkg=@ai-sdk/openai-compatible using bundled provider
INFO  2026-01-14T16:31:03 +0ms service=provider status=completed duration=0 providerID=openrouter getSDK
INFO  2026-01-14T16:31:03 +3ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:03 +1ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:03 +22ms service=tool.registry status=started invalid
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INFO  2026-01-14T16:31:03 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:03 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:03 +1ms service=tool.registry status=started read
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INFO  2026-01-14T16:31:03 +3ms service=tool.registry status=completed duration=4 invalid
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INFO  2026-01-14T16:31:03 +0ms service=tool.registry status=completed duration=3 edit
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INFO  2026-01-14T16:31:03 +0ms service=tool.registry status=completed duration=4 bash
INFO  2026-01-14T16:31:03 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:03 +1ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:03 +0ms service=tool.registry status=completed duration=4 task
INFO  2026-01-14T16:31:03 +8ms service=tool.registry status=completed duration=12 skill
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INFO  2026-01-14T16:31:03 +16ms service=session.processor process
INFO  2026-01-14T16:31:03 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:03 +0ms service=provider status=started providerID=openrouter getSDK
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INFO  2026-01-14T16:31:03 +2ms service=llm providerID=openrouter modelID=anthropic/claude-haiku-4.5 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=true agent=title stream
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INFO  2026-01-14T16:31:03 +14ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:08 +5555ms service=session.summary title=Fix subtle C++ bugs title
INFO  2026-01-14T16:31:08 +4ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:31:10 +172ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:10 +180ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:10 +99ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:10 +131ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:10 +13ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:10 +128ms service=bus type=message.part.updated publishing

This is a multi-file bug-fixing task requiring compilation, sanitizer checks, and correctness validation. Given the constraints (no user interaction, multiple independent files), I need a systematic approach:

1.  **Identify Files:** List all provided C++ files.
2.  **Plan Compilation & Testing:** Determine the compilation command to enforce all rules (`-Wall -Wextra -Werror`, ASan/UBSan). Since I don't have the expected output or test harness, I will first focus on fixing compilation errors and sanitizer warnings/errors, as these are the most immediate and objective targets. I will assume a basic compilation for each file using `g++`.
3.  **Iterative Fix:** For each file:
    a. Attempt to compile with strict flags.
    b. Read the file content.
    c. Based on the file name (which hints at the bug category), attempt to fix the subtle error.
    d. Re-attempt compilation and check for sanitizer errors (by running the compiled executable if possible, or just fixing compilation/warnings first if execution is impossible without external context).

Since I cannot ask for expected output or run a full test harness, I will prioritize fixing the compile/sanitizer issues suggested by the filenames, as this is the most direct interpretation of the constraints.

First, I will list all files and then start fixing them one by one. I will use `bash` to compile and check for errors for each file, and `read` to inspect the content before editing.

### Initial State and File Listing

I'll start by listing the files in the current directory.

INFO  2026-01-14T16:31:10 +55ms service=permission permission=bash pattern=ls *.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:10 +0ms service=permission permission=bash pattern=ls *.cpp action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:10 +10ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:10 +5ms service=bus type=message.part.updated publishing
|  Bash     List all C++ source files for review

dangling_cstr.cpp
init_order.cpp
int_overflow.cpp
iterator_invalidation.cpp
off_by_one.cpp
reference_to_temporary.cpp
unsigned_underflow.cpp
virtual_destructor.cpp

INFO  2026-01-14T16:31:10 +51ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:10 +20ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:10 +3ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:10 +0ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:10 +1ms service=tool.registry status=started question
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:10 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=started read
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INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 edit
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 write
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 webfetch
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INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 todoread
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 bash
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 skill
INFO  2026-01-14T16:31:10 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:10 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:10 +0ms service=tool.registry status=completed duration=1 task
INFO  2026-01-14T16:31:10 +4ms service=session.prompt status=completed duration=4 resolveTools
INFO  2026-01-14T16:31:10 +1ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:10 +1ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:10 +3ms service=session.processor process
INFO  2026-01-14T16:31:10 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:10 +8ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:11 +409ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:11 +2ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:11 +25ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:11 +163ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:11 +195ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:12 +382ms service=permission permission=todowrite pattern=* ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:12 +0ms service=permission permission=todowrite pattern=* action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:12 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +6ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +5ms service=bus type=todo.updated publishing
INFO  2026-01-14T16:31:12 +21ms service=bus type=message.part.updated publishing

This confirms the 8 files. I will now create a systematic plan using the `todowrite` tool to track progress across these 8 independent fixes.

### Plan Creation

I will create a task list to methodically address each file. I will mark the first task as `in_progress`.

INFO  2026-01-14T16:31:12 +6ms service=bus type=message.part.updated publishing
|  Todo     8 todos
INFO  2026-01-14T16:31:12 +3ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +1ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:12 +42ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:12 +3ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:12 +0ms service=session.prompt step=2 sessionID=ses_442a755fdffe5HA11EGv1mj8vm loop
INFO  2026-01-14T16:31:12 +34ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:12 +3ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:12 +1ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:12 +1ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:12 +0ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:12 +1ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started question
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:12 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started read
INFO  2026-01-14T16:31:12 +1ms service=tool.registry status=started glob
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started grep
INFO  2026-01-14T16:31:12 +1ms service=tool.registry status=started edit
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started write
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started task
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started webfetch
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started todowrite
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started todoread
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=started skill
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=2 invalid
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=2 question
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=2 read
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=2 glob
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=1 grep
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=0 edit
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=0 write
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=0 webfetch
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=0 todowrite
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=0 todoread
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=2 bash
INFO  2026-01-14T16:31:12 +1ms service=tool.registry status=completed duration=1 skill
INFO  2026-01-14T16:31:12 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:12 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:12 +0ms service=tool.registry status=completed duration=1 task
INFO  2026-01-14T16:31:12 +2ms service=session.prompt status=completed duration=6 resolveTools
INFO  2026-01-14T16:31:12 +25ms service=session.processor process
INFO  2026-01-14T16:31:12 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:12 +6ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:12 +626ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +31ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:12 +53ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +136ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +210ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +33ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +69ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +73ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +0ms service=permission permission=read pattern=/app/input/virtual_destructor.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:13 +1ms service=permission permission=read pattern=/app/input/virtual_destructor.cpp action={"permission":"read","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:13 +1ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +3ms service=lsp file=/app/input/virtual_destructor.cpp touching file
INFO  2026-01-14T16:31:13 +1ms service=file.time sessionID=ses_442a755fdffe5HA11EGv1mj8vm file=/app/input/virtual_destructor.cpp read
INFO  2026-01-14T16:31:13 +3ms service=bus type=message.part.updated publishing
|  Read     app/input/virtual_destructor.cpp
INFO  2026-01-14T16:31:13 +2ms service=lsp.server downloading clangd from GitHub releases
INFO  2026-01-14T16:31:13 +4ms service=bus type=message.part.updated publishing

I will start with `virtual_destructor.cpp`.

### Task 1: `virtual_destructor.cpp` (Plugin system with memory management)

The bug is likely related to missing or incorrect virtual destructors in a class hierarchy, leading to memory leaks or undefined behavior when deleting derived objects through a base class pointer.

1.  Read the file.
2.  Check compilation with strict flags.
3.  Apply fix (adding `virtual ~BaseClass() = default;` or similar).
4.  Recompile and verify.
5.  Update ToDo list.Starting with `virtual_destructor.cpp`.

First, I will read the file content to identify the class hierarchy and potential deletion points.

INFO  2026-01-14T16:31:13 +3ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:13 +1ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:31:13 +0ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:13 +1ms service=session.prompt step=3 sessionID=ses_442a755fdffe5HA11EGv1mj8vm loop
INFO  2026-01-14T16:31:13 +39ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:13 +1ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:13 +1ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started question
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:13 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:13 +1ms service=tool.registry status=started read
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started glob
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started grep
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started edit
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started write
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started task
INFO  2026-01-14T16:31:13 +1ms service=tool.registry status=started webfetch
INFO  2026-01-14T16:31:13 +1ms service=tool.registry status=started todowrite
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started todoread
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=started skill
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=3 invalid
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=3 question
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 read
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 glob
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 grep
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 edit
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 write
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=2 webfetch
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=1 todowrite
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=0 todoread
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=3 bash
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=0 skill
INFO  2026-01-14T16:31:13 +1ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:13 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:13 +0ms service=tool.registry status=completed duration=3 task
INFO  2026-01-14T16:31:13 +3ms service=session.prompt status=completed duration=8 resolveTools
INFO  2026-01-14T16:31:13 +2ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:13 +0ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:13 +7ms service=session.processor process
INFO  2026-01-14T16:31:13 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:13 +5ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:14 +586ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +8ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +304ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +1ms service=bus type=message.part.updated publishing
ERROR 2026-01-14T16:31:14 +225ms service=lsp.server error=Failed with exit code 1 Failed to extract clangd archive
INFO  2026-01-14T16:31:14 +292ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +2ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +2ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +8ms service=permission permission=bash pattern=g++ -std=c++17 -Wall -Wextra -Werror -fsanitize=address virtual_destructor.cpp -o virtual_destructor ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:14 +0ms service=permission permission=bash pattern=g++ -std=c++17 -Wall -Wextra -Werror -fsanitize=address virtual_destructor.cpp -o virtual_destructor action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:14 +6ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +3ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +9ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:14 +9ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:15 +29ms service=bus type=message.part.updated publishing

The bug is clear: line 00012 needs to be `virtual ~Plugin() { ... }` to ensure polymorphic destruction.

First, I will compile and run to confirm the expected behavior (and observe potential undefined behavior due to the missing virtual destructor). I will use `-Wall -Wextra -Werror` and add AddressSanitizer flags (`-fsanitize=address`) to catch memory issues, as requested.

Compilation command: `g++ -std=c++17 -Wall -Wextra -Werror -fsanitize=address virtual_destructor.cpp -o virtual_destructor`
Execution command: `./virtual_destructor`

I will try to compile first. If compilation fails due to `-Werror`, the fix will be to make the destructor virtual. If it passes compilation but fails runtime (ASan), the fix is still the virtual destructor for correct cleanup.

Compilation attempt:

INFO  2026-01-14T16:31:15 +2ms service=bus type=message.part.updated publishing
|  Bash     Compile virtual_destructor.cpp with strict flags and ASan

/usr/bin/bash: line 1: g++: command not found

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INFO  2026-01-14T16:31:15 +1ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:15 +0ms service=session.prompt step=4 sessionID=ses_442a755fdffe5HA11EGv1mj8vm loop
INFO  2026-01-14T16:31:15 +35ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:15 +1ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:15 +0ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:15 +18ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:15 +2ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:15 +1ms service=tool.registry status=started question
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:15 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:15 +1ms service=tool.registry status=started read
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started glob
INFO  2026-01-14T16:31:15 +1ms service=tool.registry status=started grep
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started edit
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started write
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started task
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started webfetch
INFO  2026-01-14T16:31:15 +1ms service=tool.registry status=started todowrite
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started todoread
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=started skill
INFO  2026-01-14T16:31:15 +0ms service=tool.registry status=completed duration=4 invalid
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INFO  2026-01-14T16:31:15 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:15 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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INFO  2026-01-14T16:31:18 +10ms service=permission permission=edit pattern=app/input/virtual_destructor.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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Since `g++` is not available, I must rely solely on fixing the code based on the file name hint and the logic observed. The hint is "Plugin system with memory management," and line 12 is a non-virtual destructor in a base class (`Plugin`) that is deleted polymorphically (line 52).

The fix is adding `virtual` to line 12.

Applying the fix using `edit`. I need to ensure I preserve the exact context, including indentation.

Old line 12: `    ~Plugin() {  // BUG: Missing virtual`
New line 12: `    virtual ~Plugin() {  // BUG: Missing virtual`

Wait, I should remove the comment if it's for my tracking, but the instruction says to fix IN PLACE and adhere to conventions. The comment is part of the content I read, so I should keep it if possible, or minimally change it to include `virtual`. Given the instruction is to fix the *subtle bug*, adding `virtual` is the fix. I will aim to keep the existing content structure as much as possible, which means preserving the comment unless it causes issues.

Let's try to replace the entire line content *after* the line number prefix.

Old string (content from line 12, without prefix): `~Plugin() {  // BUG: Missing virtual`
New string (content from line 12, without prefix): `virtual ~Plugin() {  // BUG: Missing virtual`

I will use `edit` to make the replacement. I'll use the full content of the line after the prefix for the old/new string to ensure uniqueness, but I must be careful about the comment. Since the goal is to fix the bug, I will simplify the replacement to only include the necessary code change and remove the tracking comment, as it's not idiomatic code.

New content for line 12: `    virtual ~Plugin() {`

Let's re-read the instruction on editing:
> When editing text from Read tool output, ensure you preserve the exact indentation (tabs/spaces) as it appears AFTER the line number prefix.

Line 12 output was: `00012|     ~Plugin() {  // BUG: Missing virtual`
Indentation seems to be 4 spaces.

Old String: `    ~Plugin() {  // BUG: Missing virtual`
New String: `    virtual ~Plugin() {`

If I use the simpler new string, it will fail if the old string is not found exactly. To maximize success, I will use the full, non-commented part as the old string and add `virtual`.

Let's use the minimal change that includes the bug fix:

Old String: `    ~Plugin() {`
New String: `    virtual ~Plugin() {`

This is highly ambiguous as it might match other destructors. I must use enough context. I will use the entire line content *without* the line number prefix as the context for uniqueness.

Old String: `    ~Plugin() {  // BUG: Missing virtual`
New String: `    virtual ~Plugin() {` (Removing the comment for cleanliness, as it's internal tracking)

Let's check for uniqueness again based on the full file content. Since this is a clear logical fix based on the file name, I'll proceed with a specific replacement.

If I *must* preserve the context:
Old String: `    ~Plugin() {  // BUG: Missing virtual`
New String: `    virtual ~Plugin() {  // BUG: Missing virtual`

This is safer for uniqueness, even though the comment is irrelevant to the final code. I'll aim for the fix and keep the comment as part of the line content.

INFO  2026-01-14T16:31:18 +2ms service=file.time sessionID=ses_442a755fdffe5HA11EGv1mj8vm file=/app/input/virtual_destructor.cpp read
INFO  2026-01-14T16:31:18 +1ms service=lsp file=/app/input/virtual_destructor.cpp touching file
INFO  2026-01-14T16:31:18 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:18 +12ms service=bus type=message.part.updated publishing
|  Edit     app/input/virtual_destructor.cpp
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INFO  2026-01-14T16:31:18 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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INFO  2026-01-14T16:31:19 +0ms service=permission permission=todowrite pattern=* action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:19 +0ms service=bus type=message.part.updated publishing
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Fix applied. Now, I'll update the ToDo list.

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|  Todo     7 todos
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INFO  2026-01-14T16:31:19 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:19 +1ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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|  Read     app/input/reference_to_temporary.cpp
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Moving to Task 2: `reference_to_temporary.cpp` (Configuration system). This often involves binding a reference to a temporary object created during a function call or initialization, which is illegal in standard C++.

First, read the file.

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|  Edit     app/input/reference_to_temporary.cpp
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The bug is precisely where indicated (lines 8-9). A temporary `std::string` is created and returned by reference.

Fix: Change `getAppName` to return by value (`std::string`) or, if the caller expects a const reference, change the function to return a reference to a stored member variable. Since this is a configuration system and the temporary is a hardcoded string, returning by value is the safest way to guarantee correctness without adding state to `Config`.

Fix: Change line 8 return type to `std::string` and line 9 to just `return "MyApplication";` (if we assume string literal promotion, or just return the string).

Old line 8: `    const std::string& getAppName() {`
New line 8: `    std::string getAppName() {`

Old line 9: `        return std::string("MyApplication");  // temporary destroyed at end of statement`
New line 9: `        return "MyApplication";` (Using string literal return which is cleaner and likely matches the compiler's internal expectations better, although the original code was using `std::string(...)` constructor explicitly). I will use the value return but keep the contents concise.

Applying Edit 1: Changing return type.

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|  Edit     app/input/reference_to_temporary.cpp
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Applying Edit 2: Changing return expression.

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INFO  2026-01-14T16:31:22 +0ms service=session.prompt step=9 sessionID=ses_442a755fdffe5HA11EGv1mj8vm loop
INFO  2026-01-14T16:31:22 +18ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:31:22 +1ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started question
INFO  2026-01-14T16:31:22 +1ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:22 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started read
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started glob
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INFO  2026-01-14T16:31:22 +1ms service=tool.registry status=started edit
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INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started task
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INFO  2026-01-14T16:31:22 +1ms service=tool.registry status=started todowrite
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INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=started skill
INFO  2026-01-14T16:31:22 +1ms service=tool.registry status=completed duration=4 invalid
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INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=3 grep
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=2 edit
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INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=1 todowrite
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=1 todoread
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=3 bash
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=1 skill
INFO  2026-01-14T16:31:22 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:22 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:22 +0ms service=tool.registry status=completed duration=2 task
INFO  2026-01-14T16:31:22 +2ms service=session.prompt status=completed duration=6 resolveTools
INFO  2026-01-14T16:31:22 +3ms service=session.processor process
INFO  2026-01-14T16:31:22 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:22 +6ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:23 +531ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:23 +420ms service=permission permission=todowrite pattern=* ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:23 +0ms service=permission permission=todowrite pattern=* action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:23 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:23 +0ms service=bus type=todo.updated publishing
INFO  2026-01-14T16:31:23 +1ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:23 +14ms service=bus type=message.part.updated publishing
|  Todo     6 todos
INFO  2026-01-14T16:31:23 +15ms service=bus type=message.part.updated publishing

Fix applied. Update ToDo list.

INFO  2026-01-14T16:31:23 +1ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:23 +43ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:31:23 +1ms service=session.prompt status=started resolveTools
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INFO  2026-01-14T16:31:23 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:23 +1ms service=tool.registry status=started read
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INFO  2026-01-14T16:31:23 +0ms service=tool.registry status=completed duration=3 edit
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INFO  2026-01-14T16:31:23 +0ms service=tool.registry status=completed duration=5 bash
INFO  2026-01-14T16:31:23 +1ms service=tool.registry status=completed duration=4 skill
INFO  2026-01-14T16:31:23 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:23 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:23 +0ms service=tool.registry status=completed duration=5 task
INFO  2026-01-14T16:31:23 +3ms service=session.prompt status=completed duration=8 resolveTools
INFO  2026-01-14T16:31:23 +3ms service=session.processor process
INFO  2026-01-14T16:31:23 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:24 +9ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:24 +637ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +1ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +6ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +84ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +14ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +1ms service=permission permission=read pattern=/app/input/iterator_invalidation.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:24 +0ms service=permission permission=read pattern=/app/input/iterator_invalidation.cpp action={"permission":"read","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:24 +1ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:24 +3ms service=lsp file=/app/input/iterator_invalidation.cpp touching file
INFO  2026-01-14T16:31:24 +1ms service=file.time sessionID=ses_442a755fdffe5HA11EGv1mj8vm file=/app/input/iterator_invalidation.cpp read
INFO  2026-01-14T16:31:24 +9ms service=bus type=message.part.updated publishing
|  Read     app/input/iterator_invalidation.cpp
INFO  2026-01-14T16:31:24 +18ms service=bus type=message.part.updated publishing

Moving to Task 3: `iterator_invalidation.cpp` (Event queue processor). This usually involves modifying a container (like `std::vector` or `std::list`) while iterating over it, causing iterator invalidation.

Read the file.

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INFO  2026-01-14T16:31:24 +0ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:24 +0ms service=session.prompt step=11 sessionID=ses_442a755fdffe5HA11EGv1mj8vm loop
INFO  2026-01-14T16:31:24 +43ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:24 +4ms service=bus type=message.updated publishing
INFO  2026-01-14T16:31:24 +0ms service=session.prompt status=started resolveTools
INFO  2026-01-14T16:31:24 +2ms service=tool.registry status=started invalid
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started question
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started bash
INFO  2026-01-14T16:31:24 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
INFO  2026-01-14T16:31:24 +1ms service=tool.registry status=started read
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INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started edit
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started write
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started task
INFO  2026-01-14T16:31:24 +1ms service=tool.registry status=started webfetch
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started todowrite
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started todoread
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=started skill
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=2 invalid
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=2 question
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=1 read
INFO  2026-01-14T16:31:24 +1ms service=tool.registry status=completed duration=1 glob
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=2 grep
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=2 edit
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=2 write
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=1 webfetch
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=1 todowrite
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=1 todoread
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=3 bash
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=1 skill
INFO  2026-01-14T16:31:24 +1ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:24 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:24 +0ms service=tool.registry status=completed duration=3 task
INFO  2026-01-14T16:31:24 +7ms service=session.prompt status=completed duration=13 resolveTools
INFO  2026-01-14T16:31:24 +12ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:24 +2ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:24 +4ms service=session.processor process
INFO  2026-01-14T16:31:24 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:24 +23ms service=bus type=session.status publishing
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|  Edit     app/input/iterator_invalidation.cpp
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The bug is clear (lines 16, 21): `std::vector::push_back` invalidates all iterators when reallocation occurs, which is likely when the new event is added during iteration.

Fix: Since the goal is to process and potentially add events, using `std::list` would solve iterator invalidation, but that requires changing the type and potentially implementation logic. A common pattern for fixing this in `std::vector` during destructive iteration (erasing elements) is using the return value of `erase()`. However, here we are *adding* elements (`push_back`), which is inherently problematic for iteration stability.

A better fix for processing and conditionally adding new items during iteration in a `std::vector` is to use a standard `for` loop with index tracking, or, more idiomatically for modern C++, to process the vector and then move any processed/new items into a new structure or re-process the entire list if necessary.

Given the problem implies adding derived events *during* the current processing loop, the most direct C++ pattern to handle this while still iterating over the vector is to use a `while` loop controlled by an index or to use an iterator that we manually advance, being careful about when `push_back` happens.

If we must use an iterator loop, we can try to use a `while` loop structure that manually increments the iterator *only* if no element was added, or re-checks the end condition.

However, the instruction suggests the code *should* produce the correct output, implying the structure of adding new events during processing is intended. When adding elements, the iterator becomes invalidated. The standard way to handle this without changing to `std::list` is to use a `while` loop that doesn't rely on the for-loop's `++it`.

Let's use an index-based loop, which is more robust against vector modifications when elements are *added* at the end.

Change line 16-22:
Old:
```cpp
00016|         for (auto it = events_.begin(); it != events_.end(); ++it) {
00017|             std::cout << "Event: " << *it << std::endl;
00018|
00019|             // Add derived event during iteration
00020|             if (*it == "user_login") {
00021|                 events_.push_back("log_analytics");  // Invalidates iterator!
00022|             }
00023|         }
```

New (Index-based loop):
```cpp
00012|     void processEvents() {
00013|         std::cout << "Processing events..." << std::endl;
00014|
00015|         // BUG: Iterator invalidated by push_back
00016|         size_t i = 0;
00017|         while (i < events_.size()) {
00018|             std::cout << "Event: " << events_[i] << std::endl;
00019|
00020|             // Add derived event during iteration
00021|             if (events_[i] == "user_login") {
00022|                 events_.push_back("log_analytics");  // Invalidates iterator!
00023|             }
00024|             ++i; // Only increment if we processed the current element
00025|         }
00026|     }
```
This requires massive changes across lines 16-25. I will use `edit` to replace the entire block from line 16 to 23.

Old block (starting line 16):
```
        for (auto it = events_.begin(); it != events_.end(); ++it) {
            std::cout << "Event: " << *it << std::endl;

            // Add derived event during iteration
            if (*it == "user_login") {
                events_.push_back("log_analytics");  // Invalidates iterator!
            }
        }
```

New block:
```
        size_t i = 0;
        while (i < events_.size()) {
            std::cout << "Event: " << events_[i] << std::endl;

            // Add derived event during iteration
            if (events_[i] == "user_login") {
                events_.push_back("log_analytics");
            }
            ++i;
        }
```
I will clean up the comment on line 21 as well during replacement.

Replacing lines 16 through 23 (8 lines). This is complex for a single `edit` call which expects single string matches. I must use `replaceAll` if I want to change multiple lines at once by matching the entire block, or I must perform multiple sequential edits. Sequential edits on line numbers are risky if the structure changes. Given the structure is mostly preserved, I'll use `replaceAll: true` and match the whole block.

Old string (lines 16-23):
```cpp
        for (auto it = events_.begin(); it != events_.end(); ++it) {
            std::cout << "Event: " << *it << std::endl;

            // Add derived event during iteration
            if (*it == "user_login") {
                events_.push_back("log_analytics");  // Invalidates iterator!
            }
        }
```
New string:
```cpp
        size_t i = 0;
        while (i < events_.size()) {
            std::cout << "Event: " << events_[i] << std::endl;

            // Add derived event during iteration
            if (events_[i] == "user_login") {
                events_.push_back("log_analytics");
            }
            ++i;
        }
```
Since this is a structural change and `replaceAll` is meant for string replacement, using it for a block change is risky if there are subtle indentation differences. I will attempt sequential edits for the critical lines, focusing on the logic change first.

Edit 1: Change loop structure start (Line 16).
Old: `        for (auto it = events_.begin(); it != events_.end(); ++it) {`
New: `        size_t i = 0;`
This replaces the `for` initialization with `size_t i = 0;`. Then I need to replace the condition/update. This is too structural for simple line-by-line replacement.

Let's use the `while` loop structure and manually advance the index, replacing the entire loop body logic. I will match the entire loop structure from line 16 to 23, using `replaceAll: true` as it is a large block of unique code.

Old String (must match exactly what was read):
```
        for (auto it = events_.begin(); it != events_.end(); ++it) {
            std::cout << "Event: " << *it << std::endl;

            // Add derived event during iteration
            if (*it == "user_login") {
                events_.push_back("log_analytics");  // Invalidates iterator!
            }
        }
```
New String (cleaning up the comment on the push_back line):
```
        size_t i = 0;
        while (i < events_.size()) {
            std::cout << "Event: " << events_[i] << std::endl;

            // Add derived event during iteration
            if (events_[i] == "user_login") {
                events_.push_back("log_analytics");
            }
            ++i;
        }
```
This requires matching the start of the loop structure on line 16 with the initialization of the `while` loop, which is non-trivial due to line number prefixes. Since `edit` relies on text matching, I have to craft the `oldString` based on the exact content read (without line numbers).

I will stick to sequential edits on the most critical lines if the block replacement proves too complex for the tool's non-interactive nature.

Critical edits:
1. Line 16: Change `for` to index initialization.
2. Line 16: Change loop logic to `while(i < events_.size())`.
3. Line 16: Change iterator usage to index usage.
4. Line 21: Remove the comment.
5. Line 23: Add `++i;`.

This is still too fragmented. I must use the whole block replacement strategy with `replaceAll: true` to maintain correct line alignment, assuming the tool handles matching the block content despite the line number prefixes in the file being read.

Old string must start on line 16: `        for (auto it = events_.begin(); it != events_.end(); ++it) {`
I will use the whole block as the old string, carefully omitting the surrounding context (lines 15 and 24) to minimize false positives if the block is used elsewhere, but I have no indication it is.

Old String (matching lines 16 through 22 plus the closing brace on 23):
```cpp
        for (auto it = events_.begin(); it != events_.end(); ++it) {
            std::cout << "Event: " << *it << std::endl;

            // Add derived event during iteration
            if (*it == "user_login") {
                events_.push_back("log_analytics");  // Invalidates iterator!
            }
        }
```
New String:
```cpp
        size_t i = 0;
        while (i < events_.size()) {
            std::cout << "Event: " << events_[i] << std::endl;

            // Add derived event during iteration
            if (events_[i] == "user_login") {
                events_.push_back("log_analytics");
            }
            ++i;
        }
```
I will perform this as a replacement of the entire loop structure, ensuring I also handle the indentation correctly from the read output. I will omit the trailing `}` line to align with how the new structure incorporates it.

Let's try to match lines 16 to 23:
Line 16: `        for (auto it = events_.begin(); it != events_.end(); ++it) {`
Line 23: `        }`

If I use `replaceAll: true` matching the above text block, it should work.

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|  Todo     5 todos
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Fix applied. Update ToDo list.

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|  Read     app/input/unsigned_underflow.cpp
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Moving to Task 4: `unsigned_underflow.cpp` (Ring buffer implementation). This typically involves using `unsigned int` or `size_t` for indices or counts, and performing subtraction that wraps around to a large positive number instead of behaving like expected negative indexing/counting.

Read the file.

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|  Edit     app/input/unsigned_underflow.cpp
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The bug is located in `available()` (lines 15-16). If `tail_ < head_` (which happens when the buffer wraps around, meaning it contains data, but the index logic doesn't account for wrap-around subtraction), `tail_ - head_` results in a huge positive number due to unsigned arithmetic rules.

In a standard ring buffer implementation where `head_` points to the next read slot and `tail_` points to the next write slot:
1. If `head_ == tail_`, it's empty (or full, depending on the chosen convention; here, `isEmpty` implies `head_ == tail_` means empty).
2. If `tail_ > head_`, the count is `tail_ - head_`.
3. If `tail_ < head_` (wrapped state), the count is `capacity_ - (head_ - tail_)` or `(capacity_ - head_) + tail_`.

Since the implementation *only* has `push` and no `pop`, the buffer will never wrap around in a way that requires case 3 *unless* the buffer is designed to be full when `head_ == tail_` (which contradicts `isEmpty`). Given the current setup where `push` is always called, `tail_` will only increase until it wraps around capacity *if* we assume `buffer_.push_back(value)` correctly handles capacity limits (which it doesn't seem to, as it just grows the vector indefinitely).

However, based purely on the *hint* "Unsigned underflow" and the line `return tail_ - head_;`, the intent is to calculate distance, and the code *must* handle the wrap-around logic, assuming the buffer size is respected somehow, or that the test case will force `tail_ < head_`.

If we assume the intent is to calculate the number of elements currently stored, and that the vector dynamically resizes and the buffer logic is only for indexing, the definition of "available" is problematic without a `pop`.

Let's assume the size of the buffer is simply `buffer_.size()`, which is what a dynamically growing vector implies. If the capacity is fixed at 10 (line 31), then `push` is flawed because it keeps calling `buffer_.push_back()`, increasing the vector size beyond capacity.

Given the file name: **Unsigned Underflow**. This strongly suggests `tail_ - head_` is wrong when `tail_ < head_`.
If we assume the code *intends* to use the vector's actual size up to the capacity, or that `push` should respect capacity:
If capacity is respected, `available()` should be related to the count of items, not capacity, if `head_` and `tail_` are used for tracking read/write positions in a fixed-size structure.

Since `push` always calls `buffer_.push_back()`, the vector grows, and `head_` and `tail_` just track the *logical* position in a hypothetical ring buffer of size `capacity_`. If `tail_` is always ahead of or equal to `head_` because nothing has been read (`pop`), then `tail_ - head_` is correct *until* `tail_` wraps around `capacity_`.

Example trace: Capacity=10.
Start: h=0, t=0. `available()` -> 0. (Correct)
Push 3 times: h=0, t=3. `available()` -> 3. (Correct)

If this was a circular buffer with a fixed size, the buffer would be full after 10 pushes, and the next push should overwrite `buffer_[0]`, incrementing `head_` to 1 and setting `tail_` to 1. This logic is missing.

**The most likely intended bug fix based on the name** is handling the subtraction when wrapping occurs, which should be:
`return (tail_ >= head_) ? (tail_ - head_) : (capacity_ - head_ + tail_);`

Since no elements are ever removed, `tail_` will never be less than `head_` unless `tail_` wraps around `capacity_` and `head_` stays at 0. If 10 elements are pushed, `tail_` becomes 10. If `capacity_` is 10, then `tail_` should be $10 \pmod{10} = 0$.

In the current code:
1. `buffer_.push_back(value)` increases vector size.
2. `tail_ = (tail_ + 1) % capacity_;` causes `tail_` to wrap around 0..9.

After 10 pushes: `tail_` will be 0. `head_` is 0. `available()` returns 0, but the vector size is 10. This implies the buffer logic is completely broken relative to the vector size OR the intent is that `available()` is only meaningful when `head_` and `tail_` track the *start* and *end* of a fixed circular segment.

If we assume the *intent* of the ring buffer (fixed size) must be respected over the use of a dynamically growing `std::vector` (which ignores capacity), the fix for the unsigned underflow when `tail_ < head_` is the mathematical correction.

**Fixing Underflow:**
Old: `return tail_ - head_;`
New: `return (tail_ >= head_) ? (tail_ - head_) : (capacity_ - head_ + tail_);`

This correctly handles wrap-around subtraction, assuming the logic of tracking `head_` and `tail_` is what defines occupancy, and that the vector's size is either ignored or implicitly capped by the logic that controls `head_`. Since `head_` is never advanced (no pop), this formula will only be correct if `tail_` wraps around (i.e., 10 pushes on capacity 10).

If 10 pushes occur on capacity 10:
`tail_` becomes 0. `head_` is 0. The formula yields 0. But there are 10 items in the vector. The code is inconsistent.

**Alternative Interpretation (Most common bug pattern for this name):**
The bug is that `tail_` has wrapped to 0 while `head_` is still 0, meaning the buffer *thinks* it's empty, even though it's full (10 items). If the buffer is full, `available()` should return `capacity_`. If it wraps like this, it signals underflow logic error *or* an incorrect emptiness check.

If `head_ == tail_` means empty (line 19), then after 10 pushes, `head_ == tail_ == 0`, and it claims it's empty, which is wrong if 10 items were pushed. The bug must be that the system *assumes* when `head == tail`, it's empty, but in a full buffer where `head` hasn't advanced, it triggers this state.

Standard fix for full buffer detection when `head == tail` is used for empty:
1. Keep one slot unused (capacity is N-1). OR
2. Use a separate `count_` variable. OR
3. Use a `is_full_` flag.

Since we are constrained to fix the underflow in `available()`: if we assume the buffer *should* know its size is `buffer_.size()` and that `head_`/`tail_` only apply if the buffer is *not* full, we can use `buffer_.size()` if that size is less than capacity, otherwise return capacity.

Let's stick to the mathematical fix for the unsigned subtraction, as it directly addresses the filename hint, and assume the overall logic error (not advancing `head_`) is secondary to fixing the calculation itself:

Old: `return tail_ - head_;`
New: `return (tail_ >= head_) ? (tail_ - head_) : (capacity_ - head_ + tail_);`

This handles the wrap-around subtraction correctly IF `tail_` and `head_` represent indices in a structure of size `capacity_`.

Applying the edit:

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INFO  2026-01-14T16:31:40 +16ms service=bus type=session.status publishing
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INFO  2026-01-14T16:31:40 +0ms service=permission permission=todowrite pattern=* action={"permission":"*","pattern":"*","action":"allow"} evaluated
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|  Todo     4 todos
INFO  2026-01-14T16:31:40 +6ms service=bus type=message.part.updated publishing

Fix applied. Update ToDo list.

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INFO  2026-01-14T16:31:41 +1ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:41 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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INFO  2026-01-14T16:31:41 +9ms service=bus type=session.status publishing
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INFO  2026-01-14T16:31:41 +1ms service=permission permission=read pattern=/app/input/dangling_cstr.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:41 +0ms service=permission permission=read pattern=/app/input/dangling_cstr.cpp action={"permission":"read","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:41 +1ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:41 +3ms service=lsp file=/app/input/dangling_cstr.cpp touching file
INFO  2026-01-14T16:31:41 +0ms service=file.time sessionID=ses_442a755fdffe5HA11EGv1mj8vm file=/app/input/dangling_cstr.cpp read
INFO  2026-01-14T16:31:41 +1ms service=bus type=message.part.updated publishing

Moving to Task 5: `dangling_cstr.cpp` (Log formatting system). This strongly suggests returning a pointer to a local variable (a C-string) from a function, which becomes invalid once the function returns.

Read the file.

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|  Read     app/input/dangling_cstr.cpp
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INFO  2026-01-14T16:31:41 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
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INFO  2026-01-14T16:31:41 +0ms service=tool.registry status=completed duration=0 edit
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INFO  2026-01-14T16:31:41 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:41 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
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INFO  2026-01-14T16:31:43 +6ms service=permission permission=edit pattern=app/input/dangling_cstr.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:43 +1ms service=permission permission=edit pattern=app/input/dangling_cstr.cpp action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:43 +1ms service=bus type=file.edited publishing
INFO  2026-01-14T16:31:43 +0ms service=format file=/app/input/dangling_cstr.cpp formatting
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The bug is clear (lines 8-10). `formatMessage` returns a pointer to a C-string created from a local `std::string` (`formatted`), which is destroyed when the function exits.

Fix: Similar to Task 2, the fix is to return by value (`std::string`) instead of returning a raw pointer to a local object's data.

Change return type on line 8 and implementation on line 10.

Edit 1: Change return type on line 8.
Old: `    const char* formatMessage(const std::string& msg) {`
New: `    std::string formatMessage(const std::string& msg) {`

Edit 2: Change return value on line 10.
Old: `        return formatted.c_str();  // Dangling pointer!`
New: `        return formatted;`

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|  Edit     app/input/dangling_cstr.cpp
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|  Edit     app/input/dangling_cstr.cpp
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|  Todo     3 todos
INFO  2026-01-14T16:31:47 +8ms service=bus type=message.part.updated publishing

Fix applied. Update ToDo list.

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|  Read     app/input/init_order.cpp
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Moving to Task 6: `init_order.cpp` (Coordinate system with units). Initialization order of static/global objects, or member initialization order within a class constructor, is a classic C++ subtle error.

Read the file.

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|  Edit     app/input/init_order.cpp
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The bug is classic: Member initializer list initialization order follows member declaration order (lines 21-23), not the order in which they appear in the initializer list (lines 7-9). `scale_` is initialized last, but is used to initialize `x_` and `y_` first, resulting in using an uninitialized value (or default-initialized value, likely 0.0 if it's a fundamental type, leading to incorrect coordinates).

Declaration order: `x_`, `y_`, `scale_`.
If `double` default initializes to 0.0:
1. `x_` is initialized using `x * scale_` => `x * 0.0` => 0.0 (Incorrect, should be $3.0 \times 2.0 = 6.0$)
2. `y_` is initialized using `y * scale_` => `y * 0.0` => 0.0 (Incorrect, should be $4.0 \times 2.0 = 8.0$)
3. `scale_` is initialized using `scale` => 2.0.

Fix: Reorder the initializer list to match the declaration order: `scale_` must be initialized first.

Old Initializer List (Lines 7-9):
```cpp
        : scale_(scale),
          x_(x * scale_),  // BUG: scale_ used before y_ initialized
          y_(y * scale_)
```
New Initializer List (Order: `scale_`, then `x_`, then `y_`):
```cpp
        : scale_(scale),
          x_(x * scale_),
          y_(y * scale_)
```
Wait, the declaration order is:
21: `double x_;`
22: `double y_;`
23: `double scale_;`

The fix is to change the initializer list to use `scale_` *after* it is initialized, or reorder the declarations. Since the prompt asks to fix the bug *in place* and members are initialized in declaration order, the safest fix is to ensure `scale_` is initialized first in the list.

The current initializer list order is: `scale_`, `x_`, `y_`. This *should* be correct if the declaration order was different.

Let's re-read the comment on lines 12-13:
`// Declaration order: x_, y_, scale_`
`// So x_ = x * scale_ uses uninitialized scale_!`

This implies the initializer list order *is* respected relative to the declaration order, which is NOT standard C++ behavior (the standard says declaration order dictates initialization order). If we assume the *compiler* follows the initializer list order (which is true for dependency resolution, but member initialization order is strictly declaration order), the issue is that `x_` is initialized before `scale_` is available *even though* `scale_` appears first in the list, because `x_` is declared before `scale_`.

The fix is to make sure `scale_` is initialized before `x_` and `y_` use it. This means reordering the *declarations* (lines 21-23) to put `scale_` first.

Declaration Order Fix:
Old:
```cpp
00021|     double x_;      // Initialized first (declaration order)
00022|     double y_;      // Initialized second
00023|     double scale_;  // Initialized third, but used in x_ and y_ init!
```
New:
```cpp
00021|     double scale_;  // Initialized first
00022|     double x_;      // Initialized second, now uses scale_
00023|     double y_;      // Initialized third
```
This fixes the dependency, regardless of the initializer list order, because member initialization is strictly governed by declaration order.

Edit 1: Reorder declarations.
Old string (line 21): `    double x_;      // Initialized first (declaration order)`
New string: `    double scale_;  // Initialized first`

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|  Edit     app/input/init_order.cpp
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Edit 2: Shift `y_` definition (line 22).
Old string (line 22): `    double y_;      // Initialized second`
New string: `    double x_;      // Initialized second, now uses scale_`

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Edit 3: Shift `scale_` definition (line 23).
Old string (line 23): `    double scale_;  // Initialized third, but used in x_ and y_ init!`
New string: `    double y_;      // Initialized third`

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|  Edit     app/input/init_order.cpp
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|  Edit     app/input/init_order.cpp
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Now the declaration order is `scale_`, `x_`, `y_`, which matches the dependency requirements even with the original initializer list order. I will clean up the comments to reflect the new state, matching the previous pattern of removing developer tracking comments, but since I used them for identification, I'll remove the old ones and keep the new ones concise.

Line 21 (New `scale_`):
Old content: `    double scale_;  // Initialized first`
New content: `    double scale_;` (Cleaned up)

Wait, I should check if I need to edit the initializer list now that the declarations are fixed.
Initializer list:
```cpp
00006|     Point(double x, double y, double scale)
00007|         : scale_(scale),
00008|           x_(x * scale_),  // BUG: scale_ used before y_ initialized
00009|           y_(y * scale_)
```
Since `scale_` is declared first, it will be initialized first. The initializer list order now is fine because `scale_` is initialized first, then `x_` uses it, then `y_` uses it. The initializer list order matches the dependency flow now.

I will clean up the comments in the declarations based on the changes I made:

Edit 4: Clean comment on line 21 (which is now `scale_`).
Old: `    double scale_;  // Initialized first`
New: `    double scale_;`

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|  Edit     app/input/init_order.cpp
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Edit 5: Clean comment on line 22 (which is now `x_`).
Old: `    double x_;      // Initialized second, now uses scale_`
New: `    double x_;`

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Edit 6: Clean comment on line 23 (which is now `y_`).
Old: `    double y_;      // Initialized third`
New: `    double y_;`

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|  Edit     app/input/init_order.cpp
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INFO  2026-01-14T16:31:56 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:56 +0ms service=tool.registry status=completed duration=1 task
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INFO  2026-01-14T16:31:56 +9ms service=bus type=session.status publishing
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INFO  2026-01-14T16:31:57 +176ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:57 +7ms service=permission permission=edit pattern=app/input/init_order.cpp ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:57 +3ms service=permission permission=edit pattern=app/input/init_order.cpp action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:57 +0ms service=bus type=file.edited publishing
INFO  2026-01-14T16:31:57 +0ms service=format file=/app/input/init_order.cpp formatting
INFO  2026-01-14T16:31:57 +0ms service=format name=zig ext=.cpp checking
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INFO  2026-01-14T16:31:57 +0ms service=format name=rubocop ext=.cpp checking
INFO  2026-01-14T16:31:57 +1ms service=format name=air ext=.cpp checking
INFO  2026-01-14T16:31:57 +0ms service=format name=prettier ext=.cpp checking
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INFO  2026-01-14T16:31:57 +0ms service=format name=nixfmt ext=.cpp checking
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INFO  2026-01-14T16:31:57 +0ms service=format name=latexindent ext=.cpp checking
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INFO  2026-01-14T16:31:57 +1ms service=file.time sessionID=ses_442a755fdffe5HA11EGv1mj8vm file=/app/input/init_order.cpp read
INFO  2026-01-14T16:31:57 +1ms service=lsp file=/app/input/init_order.cpp touching file
INFO  2026-01-14T16:31:57 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:57 +2ms service=bus type=message.part.updated publishing

I will also clean up the comment in the constructor body on line 8.
Old: `          x_(x * scale_),  // BUG: scale_ used before y_ initialized`
New: `          x_(x * scale_),`

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|  Edit     app/input/init_order.cpp
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INFO  2026-01-14T16:31:57 +79ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:31:57 +1ms service=bash-tool shell=/usr/bin/bash bash tool using shell
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INFO  2026-01-14T16:31:57 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:57 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:57 +1ms service=tool.registry status=completed duration=2 task
INFO  2026-01-14T16:31:57 +1ms service=session.prompt status=completed duration=5 resolveTools
INFO  2026-01-14T16:31:57 +2ms service=bus type=session.updated publishing
INFO  2026-01-14T16:31:57 +0ms service=bus type=session.diff publishing
INFO  2026-01-14T16:31:57 +7ms service=session.processor process
INFO  2026-01-14T16:31:57 +1ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:57 +25ms service=bus type=session.status publishing
INFO  2026-01-14T16:31:58 +594ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:31:58 +24ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:31:59 +1455ms service=permission permission=todowrite pattern=* ruleset=[{"permission":"*","pattern":"*","action":"allow"},{"permission":"doom_loop","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","pattern":"*","action":"deny"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","pattern":"*","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:59 +0ms service=permission permission=todowrite pattern=* action={"permission":"*","pattern":"*","action":"allow"} evaluated
INFO  2026-01-14T16:31:59 +1ms service=bus type=message.part.updated publishing
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|  Todo     2 todos
INFO  2026-01-14T16:31:59 +15ms service=bus type=message.part.updated publishing

Fix applied. Update ToDo list.

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INFO  2026-01-14T16:31:59 +0ms service=session.prompt status=started resolveTools
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INFO  2026-01-14T16:31:59 +0ms service=bash-tool shell=/usr/bin/bash bash tool using shell
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INFO  2026-01-14T16:31:59 +0ms service=permission permission=task pattern=general ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:59 +0ms service=permission permission=task pattern=explore ruleset=[{"permission":"*","action":"allow","pattern":"*"},{"permission":"doom_loop","action":"ask","pattern":"*"},{"permission":"external_directory","pattern":"*","action":"ask"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"},{"permission":"question","action":"deny","pattern":"*"},{"permission":"read","pattern":"*","action":"allow"},{"permission":"read","pattern":"*.env","action":"ask"},{"permission":"read","pattern":"*.env.*","action":"ask"},{"permission":"read","pattern":"*.env.example","action":"allow"},{"permission":"question","action":"allow","pattern":"*"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output","action":"allow"},{"permission":"external_directory","pattern":"/home/cubbi/.local/share/opencode/tool-output/*","action":"allow"}] evaluate
INFO  2026-01-14T16:31:59 +0ms service=tool.registry status=completed duration=1 task
INFO  2026-01-14T16:31:59 +1ms service=session.prompt status=completed duration=2 resolveTools
INFO  2026-01-14T16:31:59 +6ms service=session.processor process
INFO  2026-01-14T16:31:59 +0ms service=llm providerID=openrouter modelID=google/gemini-2.5-flash-lite-preview-09-2025 sessionID=ses_442a755fdffe5HA11EGv1mj8vm small=false agent=build stream
INFO  2026-01-14T16:31:59 +5ms service=bus type=session.status publishing
INFO  2026-01-14T16:32:00 +505ms service=bus type=message.part.updated publishing
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INFO  2026-01-14T16:32:00 +0ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:32:00 +113ms service=bus type=message.part.updated publishing
INFO  2026-01-14T16:32:02 +1926ms service=bus type=message.part.updated publishing

Moving to Task 7: `off_by_one.cpp` (Matrix border detection). This usually involves array indexing (`< N` vs `<= N`) or loop termination conditions that result in processing one too many or one too few elements/indices.

Read the file.

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INFO  2026-01-14T16:32:02 +122ms service=bus type=message.updated publishing
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INFO  2026-01-14T16:32:02 +6ms service=session.prompt sessionID=ses_442a755fdffe5HA11EGv1mj8vm exiting loop
INFO  2026-01-14T16:32:02 +1ms service=session.compaction pruning
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INFO  2026-01-14T16:32:02 +2ms service=default directory=/app/input disposing instance
INFO  2026-01-14T16:32:02 +0ms service=state key=/app/input waiting for state disposal to complete
INFO  2026-01-14T16:32:02 +2ms service=state key=/app/input state disposal completed
--- Initial command finished (exit code: 0) ---
--- no_shell=true, exiting container without starting shell ---
Command execution complete. Container has exited.
Session has been cleaned up.