---
phase: 02-diagnostics-documentation
verified: 2026-03-20T11:15:00Z
status: passed
score: 5/5 must-haves verified
re_verification: false
---

# Phase 2: Diagnostics & Documentation Verification Report

**Phase Goal:** Users can diagnose hook failures and understand SymForge's limits in Codex
**Verified:** 2026-03-20T11:15:00Z
**Status:** passed
**Re-verification:** No -- initial verification

## Goal Achievement

### Observable Truths

| # | Truth | Status | Evidence |
|---|-------|--------|----------|
| 1 | NoSidecar adoption log entry distinguishes sidecar_port_missing from sidecar_port_stale and includes project_root | VERIFIED | `NoSidecarDetail` struct at hook.rs:896 with `reason` and `project_root` fields. Two call sites at lines 301 (missing) and 344 (stale). Log format at line 1029 includes `project_root={}`. 3 unit tests pass. |
| 2 | SYMFORGE_HOOK_VERBOSE=1 causes stderr diagnostic output during hook execution | VERIFIED | `is_hook_verbose()` at hook.rs:906 checks env var == "1". Used at line 210 in `run_hook` and line 961 in `emit_no_sidecar_diagnostic`. 14+ verbose-gated `eprintln!` calls with `[symforge-hook]` prefix. 3 unit tests pass. |
| 3 | First NoSidecar event per session writes a one-time hint to stderr explaining how to start the sidecar | VERIFIED | `maybe_emit_sidecar_hint` at hook.rs:923 with marker file `.symforge/hook-hint-shown` and 30-min freshness window. Called from BOTH missing-port path (line 293) AND stale-port path (line 336). 2 unit tests pass. |
| 4 | docs/codex-integration-ceiling.md exists documenting Codex capabilities and limitations | VERIFIED | File exists with 297 lines. Covers: "What SymForge does for Codex today" (what works), "What's Fixable" (within control), "What's Blocked by Codex" (what requires Codex changes). No TODOs or placeholders. |
| 5 | CLAUDE.md references the Codex ceiling doc | VERIFIED | CLAUDE.md line 144: `[docs/codex-integration-ceiling.md](docs/codex-integration-ceiling.md)` |

**Score:** 5/5 truths verified

### Required Artifacts

| Artifact | Expected | Status | Details |
|----------|----------|--------|---------|
| `src/cli/hook.rs` | is_hook_verbose, maybe_emit_sidecar_hint, NoSidecarDetail with project_root | VERIFIED | All functions present and substantive. 58 total `#[test]` attributes in file, including 8 specific to HOOK-01/02/03. |
| `docs/codex-integration-ceiling.md` | Codex ceiling documentation (min 50 lines) | VERIFIED | 297 lines. Covers MCP tools, hooks/sidecar limitations, and Codex-blocked items. |

### Key Link Verification

| From | To | Via | Status | Details |
|------|-----|-----|--------|---------|
| `run_hook` (line 210) | `is_hook_verbose` (line 906) | env var check gating stderr output | WIRED | `let verbose = is_hook_verbose();` at line 210, used in 14+ `if verbose { eprintln!(...) }` calls |
| `run_hook` (line 293) | `maybe_emit_sidecar_hint` (line 923) | called in missing-port NoSidecar path | WIRED | `maybe_emit_sidecar_hint(&repo_root);` at line 293 |
| `run_hook` (line 336) | `maybe_emit_sidecar_hint` (line 923) | called in stale-port NoSidecar path | WIRED | `maybe_emit_sidecar_hint(&repo_root);` at line 336 |
| `record_hook_outcome_with_detail` | `NoSidecarDetail` | structured detail with reason + project_root | WIRED | Lines 301-306 and 344-349 pass `NoSidecarDetail` with `project_root: &repo_root.to_string_lossy()`. Format string at line 1029 writes `project_root={}`. |
| `emit_no_sidecar_diagnostic` (line 960) | `is_hook_verbose` (line 906) | early return gate | WIRED | `if !is_hook_verbose() { return; }` at line 961 |
| CLAUDE.md (line 144) | `docs/codex-integration-ceiling.md` | markdown link | WIRED | `[docs/codex-integration-ceiling.md](docs/codex-integration-ceiling.md)` |

### Requirements Coverage

| Requirement | Source Plan | Description | Status | Evidence |
|-------------|------------|-------------|--------|----------|
| HOOK-01 | 02-01-PLAN | NoSidecar log entry includes missing vs stale and project root | SATISFIED | `NoSidecarDetail` struct with `reason` and `project_root` fields; two distinct call sites; 3 unit tests |
| HOOK-02 | 02-01-PLAN | SYMFORGE_HOOK_VERBOSE=1 enables stderr diagnostics | SATISFIED | `is_hook_verbose()` function; verbose-gated eprintln throughout run_hook; 3 unit tests |
| HOOK-03 | 02-01-PLAN | First NoSidecar per session writes one-time hint | SATISFIED | `maybe_emit_sidecar_hint` with marker file and 30-min freshness; called from both NoSidecar paths; 2 unit tests |
| DOCS-01 | 02-01-PLAN | docs/codex-integration-ceiling.md documents Codex capabilities | SATISFIED | 297-line doc covering what works, what's fixable, what's blocked. Completed by Kilo Code. |
| DOCS-02 | 02-01-PLAN | CLAUDE.md references Codex ceiling doc | SATISFIED | CLAUDE.md line 144 links to the doc. Completed by Kilo Code. |

**Orphaned requirements:** None. All 5 requirement IDs from ROADMAP Phase 2 (HOOK-01, HOOK-02, HOOK-03, DOCS-01, DOCS-02) are claimed by 02-01-PLAN and verified.

### Anti-Patterns Found

| File | Line | Pattern | Severity | Impact |
|------|------|---------|----------|--------|
| (none) | - | - | - | No anti-patterns found in phase-modified files |

Note: TODO/FIXME grep hits in hook.rs (lines 1253, 1257, 1352, 1357) are test fixture strings containing the pattern "TODO" as search input data, not actual TODO comments.

### Human Verification Required

None required. All truths are programmatically verifiable and have been verified through code inspection and passing tests.

### Observations

1. **ROADMAP filename discrepancy:** ROADMAP success criterion #4 says `docs/codex-ceiling.md` but the actual file is `docs/codex-integration-ceiling.md`. The PLAN, CONTEXT, and CLAUDE.md all use the correct filename. This is a minor ROADMAP text inaccuracy, not a gap.

2. **Test coverage:** 8 unit tests specifically cover HOOK-01 (3 tests), HOOK-02 (3 tests), and HOOK-03 (2 tests). All pass with `cargo test --all-targets -- --test-threads=1`.

3. **Rust 2024 compatibility:** Tests use `unsafe` blocks for `std::env::set_var`/`remove_var` per Rust 2024 edition requirements. SAFETY comments document that tests run with `--test-threads=1`.

4. **All commits verified:** 1a273dc (feat), cd738af (test+fix), 214da95 (docs), 805185f (summary) all present in git history.

5. **Build health:** `cargo fmt -- --check` clean. `cargo test` passes all tests (0 failures).

---

_Verified: 2026-03-20T11:15:00Z_
_Verifier: Claude (gsd-verifier)_
