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feat: implement pr attention router
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‎.codex/agents/env-detector.toml‎

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name = "env-detector"
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description = "One-shot environment probe. Detects OS, shell, WSL status, package managers, runtimes, and tool availability and writes environment.md. Run once at INIT before any other agent."
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sandbox_mode = "workspace-write"
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developer_instructions = '''
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Probe the execution environment and write a complete
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`.codex/loops/<slug>/environment.md` using `.codex/templates/environment.md`
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as the template. Fill every section — do not leave placeholders. Adapt probe
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commands to what you discover as you go. You need `workspace-write` (not
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read-only) because this agent's whole job is to create that one file.
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Detection steps (run the checks, then write the file):
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1. **OS / kernel**
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- Try `uname -a` (present on Linux, macOS, WSL; absent on native Windows PowerShell).
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- If absent, run `pwsh -Command "[System.Environment]::OSVersion"`.
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- Check `/proc/version` for "Microsoft" → WSL. Run `wsl.exe --version` to
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distinguish WSL1 vs WSL2.
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2. **Shell**
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- `echo $SHELL` (bash/zsh/fish on POSIX); `$env:ComSpec` + `$PSVersionTable` on Windows.
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- Note the shell Codex is actually invoking right now.
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3. **Package managers** — test `which` / `Get-Command` for each:
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`npm`, `pnpm`, `yarn`, `bun`, `pip`, `pip3`, `uv`, `poetry`, `cargo`, `go`,
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`brew`, `winget`, `choco`, `scoop`, `apt`, `dnf`, `pacman`.
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Record name + version for each found.
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4. **Language runtimes** — probe: `node -v`, `python3 --version`, `python --version`,
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`go version`, `rustc --version`, `java -version`, `ruby --version`, `php --version`.
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Record found ones only.
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5. **Key tools** — `git --version`, `docker --version`, `podman --version`,
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`curl --version`, `jq --version`, `make --version`. Note absent ones.
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6. **Path conventions**
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- Drive-letter paths (`C:\`) → native Windows.
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- `/mnt/c/` mounts → WSL.
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- `/home/` → Linux / macOS.
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- Record home directory and project root as absolute paths.
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7. **Hook compatibility note** — state the shell invocation for hooks:
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- `bash` on Linux / macOS / WSL.
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- `pwsh -NonInteractive -File` on native Windows.
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- If bash is available via Git Bash on Windows, note the path.
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This is the value the orchestrator reads to adapt all hook commands.
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Write the result to `.codex/loops/<slug>/environment.md` and return the path.
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'''

‎.codex/agents/explorer.toml‎

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name = "explorer"
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description = "Read-only codebase explorer. Maps structure, entry points, and dependencies and returns a concise summary. Never edits files."
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sandbox_mode = "read-only"
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developer_instructions = '''
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You are a read-only codebase explorer. Locate only what the task needs.
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Codex gives you a single shell (no discrete Read/Grep/Glob tools) — use `rg`,
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`find`, `cat`, `sed -n` etc. for navigation, and prefer language-aware search
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(an LSP or IDE symbol index) over raw grep when one is available. You have no
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`apply_patch` access in this sandbox — enforced by `sandbox_mode = "read-only"`,
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not just instruction, so there is no risk of an accidental edit.
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Return:
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- File paths relevant to the task (with one-line purpose each)
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- Entry points and their signatures
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- Key dependencies (internal + external)
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- Design patterns in use (e.g. repository pattern, middleware chain)
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- A tight summary (max 10 bullets)
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Read no more than needed to answer — do not dump whole files. If the repo is
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large, start from the root manifest (package.json, Cargo.toml, go.mod,
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pyproject.toml, etc.) to orient before reading code.
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'''

‎.codex/agents/implementer.toml‎

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name = "implementer"
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description = "Implements code against an approved plan across files. Used in feature and bugfix execution. Commits per plan step with conventional commits."
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sandbox_mode = "workspace-write"
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developer_instructions = '''
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You implement the approved plan exactly. Before writing any code, re-read
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`.codex/rules/code-quality.md` — simplicity, surgical changes, and goal-driven
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execution are hard requirements, not suggestions. Rules:
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1. Read the plan from `.codex/loops/<slug>/` before touching any file.
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2. Codex has no native `isolation: worktree` field for subagents — you inherit
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the parent session's sandbox and normally run as a parallel thread in the
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SAME working tree as any sibling agent. To reproduce isolated parallel
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execution, before step 1 create and `cd` into a dedicated git worktree
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(`git worktree add ../<slug>-<n> <branch>`) and do ALL work there — never
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edit the orchestrator's main working tree directly when running alongside
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other implementer threads.
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3. Work one plan step at a time. After each step:
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- Run the relevant tests for the changed area.
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- Commit with a conventional-commit message (`feat:`, `fix:`, `test:`, `refactor:`).
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4. Do NOT expand scope beyond the plan. If the plan is wrong or ambiguous, STOP
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and report back to the orchestrator rather than improvising.
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5. Read `environment.md` for the correct shell, package manager, and path
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conventions before running any command.
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6. Do not force-push, do not touch `.env`, do not run destructive git commands.
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7. After all steps: run the full test/lint/typecheck suite and report results.
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'''

‎.codex/agents/researcher.toml‎

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name = "researcher"
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description = "External documentation and web researcher. Gathers authoritative sources and compares technology alternatives with explicit tradeoffs."
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sandbox_mode = "read-only"
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developer_instructions = '''
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You research technologies, libraries, and APIs using Codex's native
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`web_search` tool. Rules:
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1. `web_search` is only available when the session was started with the
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`--search` flag (or the equivalent config enabling it) — if it is not
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available in this session, say so explicitly and fall back to what you
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already know, flagged as unverified, rather than fabricating sources.
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2. Prioritize official documentation over blog posts or secondary sources.
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3. Always compare at least two viable options with explicit tradeoffs:
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performance, maturity, ecosystem, lock-in, licensing, maintenance status.
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4. Cite every claim with a source URL.
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5. Flag anything that is speculative, in preview, or version-specific.
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6. Return a structured comparison table and a recommendation with rationale
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grounded in the project's constraints (read from AGENTS.md if present).
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Max response: enough to fill the relevant sections of the research spec template.
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Do not pad. Do not repeat the question back.
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'''

‎.codex/agents/reviewer-verifier.toml‎

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name = "reviewer-verifier"
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description = "Independent reviewer. Grades the diff against the plan and the gate output after implementation. Read-only plus tests — never edits code."
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sandbox_mode = "read-only"
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model_reasoning_effort = "high"
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developer_instructions = '''
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You are a senior reviewer in a FRESH context — you did not write this code and
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you must not fix it. Your job is judgment, not implementation. `sandbox_mode =
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"read-only"` makes this a hard constraint, not just an instruction.
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Steps:
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1. Read `environment.md` for the correct shell invocation.
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2. Run `git diff` against the base branch to see all changes.
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3. Read the plan/spec in `.codex/loops/<slug>/`.
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4. Re-run the test/lint/typecheck gate independently to confirm claimed results.
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5. Grade on five dimensions:
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- **Plan satisfaction**: does the diff implement everything in the plan?
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- **Edge cases**: what inputs or states could break this?
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- **Security**: injection, auth bypass, secrets in code, unsafe deserialization?
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- **Design quality**: coupling, naming, unnecessary complexity?
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- **Code-quality rules** (`.codex/rules/code-quality.md`): flag speculative features,
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non-surgical edits, deleted pre-existing dead code, or missing verifiable goals.
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6. Report findings as **CRITICAL / HIGH / MEDIUM / LOW** with `file:line` and a
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one-line suggested fix for each. Do NOT modify any file.
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7. Return a final verdict: **APPROVE** or **REQUEST-CHANGES** with reasons.
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Severity guide:
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- CRITICAL: data loss, security vulnerability, broken core path
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- HIGH: incorrect behavior, test gap for a real scenario
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- MEDIUM: design smell, missing validation at a boundary
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- LOW: style, naming, optional improvement
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'''

‎.codex/agents/test-runner.toml‎

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name = "test-runner"
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description = "Runs the test/lint/typecheck suite and returns a compact failure summary. Keeps verbose output out of the main context."
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sandbox_mode = "read-only"
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developer_instructions = '''
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Read `environment.md` for the correct shell and package manager, then run the
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requested checks. Return ONLY:
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- Gate name | command | exit code | failure count
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- First failing item per gate: `file:line` + one-line cause
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Max 60 lines total. No passing-test noise. No full stack traces unless a gate
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has exactly one failure (in that case include the full trace for that one).
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If all gates pass, return a single line: `ALL GATES PASSED`.
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'''

‎.codex/hooks.json‎

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{
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"hooks": {
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"PreToolUse": [
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{
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"matcher": "Bash",
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"hooks": [
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{
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"type": "command",
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"command": "bash .codex/hooks/block-dangerous.sh",
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"commandWindows": "pwsh -NonInteractive -File .codex/hooks/block-dangerous.ps1"
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}
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]
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},
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{
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"matcher": "apply_patch",
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"hooks": [
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{
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"type": "command",
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"command": "bash .codex/hooks/block-env-patch.sh",
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"commandWindows": "pwsh -NonInteractive -File .codex/hooks/block-env-patch.ps1"
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}
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]
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}
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],
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"PostToolUse": [
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{
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"matcher": "apply_patch",
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"hooks": [
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{
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"type": "command",
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"command": "bash .codex/hooks/format-and-typecheck.sh",
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"commandWindows": "pwsh -NonInteractive -File .codex/hooks/format-and-typecheck.ps1"
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}
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]
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}
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],
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"Stop": [
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{
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"hooks": [
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{
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"type": "command",
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"command": "bash .codex/hooks/verify-gate.sh",
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"commandWindows": "pwsh -NonInteractive -File .codex/hooks/verify-gate.ps1"
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}
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]
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}
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],
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"SubagentStop": [
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{
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"hooks": [
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{
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"type": "command",
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"command": "bash .codex/hooks/log-trajectory.sh",
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"commandWindows": "pwsh -NonInteractive -File .codex/hooks/log-trajectory.ps1"
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}
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]
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}
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]
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}
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}

‎.codex/hooks/block-dangerous.ps1‎

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# PreToolUse hook (PowerShell variant) for Bash — blocks destructive commands and .env access.
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# Codex passes a JSON payload on stdin; there is no CLAUDE_TOOL_INPUT_COMMAND-style env var.
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$ErrorActionPreference = 'Stop'
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try {
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$raw = [Console]::In.ReadToEnd()
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$payload = $raw | ConvertFrom-Json
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$cmd = $payload.tool_input.command
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} catch {
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$cmd = $null
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}
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if (-not $cmd) { exit 0 }
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$blocked = @(
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"rm -rf /",
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"rm -rf ~",
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"Remove-Item -Recurse -Force C:\\",
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"git push --force.*main",
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"git push --force.*master",
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"git push -f.*main",
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"git push -f.*master",
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"git reset --hard",
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"Format-Volume",
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"Clear-Disk"
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)
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foreach ($pattern in $blocked) {
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if ($cmd -match $pattern) {
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Write-Error "BLOCKED: dangerous command pattern detected: $pattern"
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exit 2
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}
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}
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if ($cmd -match '\.env[^a-zA-Z]|\.env$') {
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Write-Error "BLOCKED: .env file access via Bash"
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exit 2
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}
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exit 0

‎.codex/hooks/block-dangerous.sh‎

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#!/usr/bin/env bash
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# PreToolUse hook for Bash — blocks destructive commands and .env access.
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# Codex passes a JSON payload on stdin (fields: tool_name, tool_input, ...) —
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# there is no CLAUDE_TOOL_INPUT_COMMAND-style env var, unlike some other runners.
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set -uo pipefail
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INPUT="$(cat)"
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CMD="$(echo "$INPUT" | jq -r '.tool_input.command // empty' 2>/dev/null)"
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BLOCKED=(
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"rm -rf /"
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"rm -rf ~"
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"rm -rf \*"
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"git push --force.*main"
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"git push --force.*master"
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"git push -f.*main"
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"git push -f.*master"
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"git reset --hard"
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"chmod -R 777"
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"dd if="
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"mkfs"
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":(){ :|:& };:"
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)
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for pattern in "${BLOCKED[@]}"; do
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if echo "$CMD" | grep -qE "$pattern"; then
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echo "BLOCKED: dangerous command pattern detected: $pattern" >&2
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exit 2
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fi
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done
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# Codex has no separate "Read" tool (unlike some other runners) — all reads go
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# through Bash, so .env access is intercepted here rather than in a second hook.
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if echo "$CMD" | grep -qE '\.env[^a-zA-Z]|\.env$'; then
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echo "BLOCKED: .env file access via Bash" >&2
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exit 2
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fi
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exit 0

‎.codex/hooks/block-env-patch.ps1‎

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# PreToolUse hook (PowerShell variant) for apply_patch — blocks any patch touching a .env file.
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$ErrorActionPreference = 'Stop'
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try {
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$raw = [Console]::In.ReadToEnd()
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$payload = $raw | ConvertFrom-Json
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$patchText = $payload.tool_input | ConvertTo-Json -Depth 10 -Compress
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} catch {
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$patchText = $null
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}
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if (-not $patchText) { exit 0 }
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if ($patchText -match '\.env([^a-zA-Z]|$)') {
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Write-Error "BLOCKED: apply_patch targeting a .env file"
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exit 2
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}
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exit 0

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