docs: record subagent outcomes for findings 3, 8, 19, 35, 37

Two landed (8 partial, 35 in full); three declined after investigation
found the audit's premise didn't hold on inspection of current code.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YR2CjVumUbEGWcMikcoXBD

SIMPLIFICATION-AUDIT.md

@@ -70,6 +70,7 @@ This is the area you named as hardest to understand and slowest. Root cause: mos
    Effort S each, M for the walk-up.
 
 3. **Tests of the test harness: 1,090 lines testing 475 lines.** `test-run-tests.sh` and `test-run-bats.sh` defend "green either way" holes that exist only because the runners hand-roll TAP parsing and set-equality checks. Replace both runners with about 40 lines (`bats -r plugins` plus a parallel `find | xargs` over `test-*.sh`) and delete the meta-tests. `lib/batch-run.sh` stays; `sync-plugin-content.sh` sources it. Effort M.
+   > **Not proceeding (2026-09-13):** premise doesn't hold. A full read of both runners and both meta-tests found the "TAP-parsing/set-equality" logic is regression coverage for specific past incidents — a `BATS_FILE_FLOOR` hardcode once let deleted test files vanish silently ("155 tests, 0 failures" with 11 tests missing); a missing/broken `run-bats.sh` used to make the whole bats suite disappear with a green summary; a formatter change once reported "0 tests, 0 failures" as a pass. Replacing the runners as specified would delete exactly the guards against that failure class. No changes made. Re-scoping this would mean deciding, guard by guard, which are still worth keeping — a design decision, not a mechanical cleanup.
 
 4. [x] ~~**`skill-frontmatter` is a 62-line bash script inlined in YAML** with its own 366-line test. `skill-size-check.sh` already parses the same frontmatter with PyYAML. Fold it in (about 15 Python lines), delete the inline hook, its test, and the 79 lines in `gates.md` arguing for the split. Effort S.~~
    > **Done (2026-09-12):** see commit `c8a7c9e` on `docs/simplification-audit`. Added a ~20-line required-frontmatter check (`name`, `description`, `metadata.version` as three-part semver) to `scripts/skill-size-check.sh`, reusing the YAML mapping `description_value()` already parses. Removed the inline `skill-frontmatter` hook (~80 lines) from `.pre-commit-config.yaml` and deleted `tests/test-skill-frontmatter.sh` (366 lines). Removed the 79-line "the other hook on that scope" discussion from `docs/spec/gates.md` and its now-dangling cross-reference, replacing both with a one-line note of the fold; updated the pre-push hook counts there. Updated fixture builders in `tests/test-skill-size-check.sh`, `tests/test-adr0020-body-checks.sh`, `tests/test-adr0020-targets.sh`, `tests/test-adr0020-differential.sh`, and `tests/test-vale-hooks-consumer.sh` to carry valid `metadata.version` so the new check doesn't spuriously fail existing fixtures.
@@ -82,6 +83,7 @@ This is the area you named as hardest to understand and slowest. Root cause: mos
 7. **`check-plugin-content-sync.sh` is 813 lines wrapping `apm pack`, with a 1,291-line test.** The mirror itself must stay (Claude Code marketplace installs need flat directories), and the script does real work a bare `git diff` would lose: it strips `tests/` from the mirror, regenerates both `plugin.json` files with `mcpServers` reinjected, and packs into a scratch copy so `--check` never mutates. Even so, 2,100 lines for that is disproportionate; target a third. Effort M.
 
 8. **`docs/spec/gates.md` (1,048 lines) is roughly 15% "what is enforced" and 85% post-mortems** of defects already fixed and pinned by tests. The 60-line hook table is the useful part. Target 200 lines. The same applies to the 106 comment lines in `.pre-commit-config.yaml` and to `scripts/`, where 8 of 15 files are 40 to 60% comments. Effort M.
+   > **Partially done (2026-09-13):** see commit `a35f5e8` on `docs/simplification-audit`. The 85%-post-mortem characterization was stale — the file had already shrunk to 966 lines by other findings, and most of what remained is load-bearing "why this design" rationale cited by ADRs and tests, not dead incident narration. Cut only the two genuinely stale passages: a reproduction paragraph carrying explicitly outdated numbers, and a retrofit-process narrative superseded by current state — 966 → 930 lines. `.pre-commit-config.yaml`'s comments were left untouched; on inspection they're compact constraint notes, not filler. Target of 200 lines not reached and not recommended — would require deleting content the file itself flags as load-bearing.
 
 **Proposed target.** Pre-push 14 hooks to 6: `run-tests`, `validate-plugins`, `validate-marketplace`, `apm-pack-check-clean`, `check-plugin-content-sync`, `check-release-needed`. Pre-commit stays roughly as is minus `skill-frontmatter`, and minus `check-ast` once finding 9 removes the only `.py` files. Tests 26 files to about 10 (12,400 to about 5,000 lines). Keep bats and its three submodules; the 351 bats tests ship inside plugins and are the right tool there. Do not port the bash suites to bats; delete them instead.
 
@@ -120,6 +122,7 @@ The shared pattern: per-skill `README.md` files no model reads, a `docs/research
 ### 4.3 git and gitea (153 + 93 files, 9,889 + 6,047 lines incl. mirror; source 3,288 + 2,286)
 
 19. **Delete the two router skills and two orchestrate agents (309 lines + 195 reference lines).** No skill invokes them as a step; they appear only in boundary clauses (`AGENTS.md`, `git-worktrees`, `gitea-issues`, `gitea-prs`) and as worked examples in agent-audit references, all of which must change in the same commit or `skill-size-check` fails on the dangling target. Claude Code already routes on descriptions. The chain today is `git-workflow` step 5 invokes `git-orchestrate`, whose step 5 invokes `git-commits`, which runs `rtk git commit`: three hops. Both agents exceed 900 words; ADR-0020 deliberately sets no agent body gate. Effort S.
+    > **Not proceeding (2026-09-13):** premise doesn't hold. There are no separate "router skills" — only two `.agent.md` files. `git-orchestrate` is not a dangling boundary-clause reference; it's `git-workflow` step 5's actual execution backend (documented both directions), so deleting it breaks `git-workflow`'s only execution path rather than tidying an orphan. `gitea-orchestrate` is intentional per ADR-0011 (agent-facing counterpart for agent callers) even though `gitea-workflow` doesn't call it. A third, undocumented instance of the same pattern (`apm-orchestrate`) exists and isn't addressed by this finding. The four boundary-clause locations named above don't actually reference either agent. No changes made. This needs the "short discussion" §7 bucket 2 implies, not a mechanical delete.
 
 20. **Collapse git 7 skills to 1; gitea 7 to 2.** Git references are man-page restatement: `git-log-format.md` (242 lines listing `%H`, `%ar`), `conventional-commits-spec.md` (170 lines), `worktrees.md` (178), `merging.md` explaining fast-forward. Roughly 60% of the plugin is generic. The genuinely house-specific content fits in about 150 lines: the `rtk` rule and ADR-0023 exceptions, main/master refusal, `--no-verify`, the `-i --autosquash` 2.39.5 trap, `--force-with-lease --force-if-includes`, bisect exit codes, submodule push ordering, the detached-HEAD worktree trap. Gitea is more legitimately specific (MCP schema quirks: `tree_sha`, `withLines`, silent drops on PR create, `per_page` 20 vs 30, 404 means 403) and splits naturally into `gitea-tracker` (issues, PRs, labels, milestones) and `gitea-repo` (branches, files, releases). Risk: one description must carry all trigger phrases; keep a dispatch table at the top of the body. Keep `pc-author` and `pc-run` (finding 38). Effort M.
 
@@ -162,11 +165,13 @@ Not covered by the area audits above; found on a final sweep of the root config
 
 34. **The SessionStart hook auto-updates the install on every startup.** `check-apm-current.sh` runs `apm outdated` (network, 60 s timeout) and then `apm update --yes` (300 s timeout) at every session start, rewriting `apm.lock.yaml`. That is why the lock file is dirty at the start of this session and why `AGENTS.md` has to explain "commit or discard it deliberately". It is a 60-line script with a 368-line test, an ADR (0019), the `executables.allow` pin, and a sync hook behind it. For a repo that is its own source, the update belongs in `install.sh` or a manual `apm update`, not in session startup. Effort S to remove; the design question is whether auto-update at startup is wanted at all.
 
-35. **Outputs and packages for consumers that do not exist.** The `codex` output profile generates `.agents/plugins/marketplace.json` (95 lines) although Codex is not a supported consumer. The `mattpocock-skills` remote package entry is the only reason `apm-marketplace-check` needs the network, and its pin is advanced by hand (ADR-0015). The `.github/plugin/marketplace.json` mirror is a legacy path (finding 2). Removing all three leaves one generated marketplace manifest (the per-plugin `plugin.json` pairs remain) and no network-dependent hook. Effort S.
+35. [x] ~~**Outputs and packages for consumers that do not exist.** The `codex` output profile generates `.agents/plugins/marketplace.json` (95 lines) although Codex is not a supported consumer. The `mattpocock-skills` remote package entry is the only reason `apm-marketplace-check` needs the network, and its pin is advanced by hand (ADR-0015). The `.github/plugin/marketplace.json` mirror is a legacy path (finding 2). Removing all three leaves one generated marketplace manifest (the per-plugin `plugin.json` pairs remain) and no network-dependent hook. Effort S.~~
+    > **Done (2026-09-13):** see commit `568ca74` on `docs/simplification-audit`. Removed the `codex` output profile from root `apm.yml` and its compiled `.agents/plugins/marketplace.json` (95 lines), and the `mattpocock-skills` remote package entry — the only remote marketplace entry, so `apm-marketplace-check` and `apm-pack-check-clean` no longer need network access at all. Updated `README.md`, `AGENTS.md`, `docs/spec/gates.md`, and `docs/spec/architecture.md` accordingly; added one-line superseded/updated notes to ADR-0015 and ADR-0021. Left `.github/plugin/marketplace.json` untouched — that's the Copilot legacy-path question in finding 2/§8, out of scope here; only re-ran the sync script to keep it consistent. `apm.lock.yaml` unaffected (`marketplace.packages[]` isn't part of the lockfile). Verified via `apm install`, `apm pack --marketplace=claude --check-versions`, and all four affected pre-push hooks.
 
 36. **The release-tag mechanism guards an external contract with no known consumer.** `.pre-commit-hooks.yaml` exports three hooks for other repos to pin by `rev: <tag>`. `check-release-needed` (242 lines + 442 test), `test-vale-hooks-consumer` (270 lines), ADR-0014, and three tags exist to serve that. If no other repo pins these hooks today, the whole mechanism can be deferred until one does. Effort S.
 
 37. **Two `.mcp.json` files declare an Obsidian vault server over `docs/`** (root and `plugins/bin/`; the other five plugin `.mcp.json` files are empty stubs), while `AGENTS.md` forbids using an external memory system for this repo. If the Obsidian tools are unused, drop both and the `reinject_mcp_servers` explanation in the bin README; the bin `plugin.json` pair regenerates. Effort S.
+    > **Not proceeding (2026-09-13):** premise doesn't hold. The server exposes the repo's own git-tracked `docs/` folder — not an external/off-repo store — so it isn't the "external memory system" AGENTS.md's rule targets. It was deliberately added and versioned (3 commits), is documented as current intended behavior in both READMEs, and ADR-0018 uses it as its only concrete worked example of apm's MCP-dependency propagation mechanism actually working. No skill invokes the Obsidian tools as a workflow step, but that alone doesn't make the config dead. No changes made; recommend a human confirm whether the vault tooling is still wanted before removing it.
 
 38. **`pc-author` / `pc-run` (689 lines) carry generic pre-commit documentation.** `hooks-by-language.md` (128 lines) and `failure-patterns.md` (133) restate pre-commit.com. Keep the skills, trim to the house-specific rules. Effort S.