feat(framework): P6 docs + compliance matrix + resident-budget CI (#606)

R9 + R10 of the Constitution alpha (in-repo deliverables):

- framework/CONTRIBUTING.md: layer model, operator-hygiene/PII prohibition,
  dedup rule, resident budget, dual-installer parity rule, adding-a-harness,
  re-contamination rule, harness x gate compliance matrix (hook-parity gap
  marked as tracked-v2), known-limitations (DESIGN §9 residuals), PR checklist.
- check-resident-budget.sh: line-count ceiling over framework-owned resident
  files (CONSTITUTION + AGENTS + each runtime/*/RUNTIME.md), with --self-test;
  replaces the crude inline ci.yml loop. Wired blocking in .woodpecker/ci.yml.

Composer unit test (R9) already runs via pnpm test; verify-sanitized.sh (P1)
already wired. Sanitization + budget + prettier all green.

Remaining for the mission close: aiguide reconcile (separate repo) + the alpha
tag (Lead cuts after full DoD §8 green + all phases merged; P5 #605 pending).

Refs #606, #542

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EsgTQzV5YUGk1JtCLP4B83

.woodpecker/ci.yml

@@ -25,12 +25,10 @@ steps:
     commands:
       - apk add --no-cache bash
       - bash packages/mosaic/framework/tools/quality/scripts/verify-sanitized.sh
-      # L0 resident-token budget: keep the Constitution + dispatcher small.
+      # Resident line-count ceiling over framework-owned resident files
-      - |
+      # (Constitution + dispatcher + each RUNTIME.md slice). See DESIGN §7 / R9.
-        for f in CONSTITUTION.md AGENTS.md; do
+      - bash packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh --self-test
-          n=$(wc -l < "packages/mosaic/framework/defaults/$f")
+      - bash packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh
-          if [ "$n" -gt 120 ]; then echo "L0 budget exceeded: defaults/$f is $n lines (max 120)"; exit 1; fi
-        done
 
   typecheck:
     image: *node_image

docs/TASKS.md

@@ -45,3 +45,7 @@ Active workstream is **W1 — Federation v1**. Workers should:
 - Status: PR open, awaiting maintainer merge ratification (fleet-governing change).
 - Cut always-injected contract AGENTS+TOOLS+RUNTIME 8,827→4,122 tok (−53%); all 12 hard gates intact.
 - Validation: deterministic gate-checklist PASS; headless A/B thin 7/9 vs monolith 5/9. Detail: scratchpads/contract-thin-core.md.
+
+## P6 — Docs, compliance matrix, alpha tag (#606) — feat/p6-docs-compliance-alpha
+
+- Status: in-repo deliverables done (CONTRIBUTING.md + harness×gate compliance matrix + check-resident-budget.sh + CI wiring). Remaining: aiguide reconcile (separate repo), alpha tag (Lead, post-merge). Detail: scratchpads/p6-docs-compliance-alpha.md.

docs/scratchpads/p6-docs-compliance-alpha.md

@@ -0,0 +1,29 @@
+# P6 — Docs, compliance matrix, alpha tag (constitution capstone)
+
+- **Issue:** #606 · **Branch:** `feat/p6-docs-compliance-alpha` · **Lineage:** #542
+- **Requirements:** R9 (resident line-count ceiling) + R10 (CONTRIBUTING + compliance matrix + aiguide) + alpha tag
+
+## Delivered (in-repo)
+
+- `framework/CONTRIBUTING.md` — layer model, operator-hygiene/PII prohibition, dedup rule, resident
+  budget, **dual-installer parity rule**, adding-a-harness, re-contamination rule, **harness×gate
+  compliance matrix** (hook-parity gap marked ⚠️ tracked-v2), known-limitations (§9 residuals), PR checklist.
+- `framework/tools/quality/scripts/check-resident-budget.sh` — line-count ceiling over framework-owned
+  resident files (CONSTITUTION + AGENTS + each runtime/\*/RUNTIME.md); `--self-test`; replaces the crude
+  inline ci.yml loop. Wired blocking in `.woodpecker/ci.yml`.
+- Composer unit test (R9) already runs via `pnpm test`; `verify-sanitized.sh` (P1) already wired.
+
+## Verification
+
+- Sanitization gate green (CONTRIBUTING is operator-neutral). Resident-budget self-test + real run green.
+- prettier clean. Current resident counts: CONSTITUTION 96, AGENTS 83, RUNTIME max 75 — all < ceiling.
+
+## Remaining
+
+- [ ] `aiguide` reconcile (separate repo `~/src/aiguide` / mosaicstack/aiguide) — consistency pass vs Constitution.
+- [ ] Alpha tag `mosaic-vX.Y.Z-alpha` — propose version; Lead cuts after full DoD §8 green + all phases merged.
+
+## Notes
+
+- Alpha DoD (DESIGN §8): all phases P0–P6 merged + CI green. P5 (#605) pending merge after 0.0.38 publish.
+- Hook parity (codex/opencode/pi) = tracked v2 gap, documented in the matrix, not closed here.

packages/mosaic/framework/CONTRIBUTING.md

@@ -0,0 +1,185 @@
+# Contributing to the Mosaic Framework
+
+The Mosaic framework is the open-source agent-operating layer that deploys to
+`~/.config/mosaic/`. It is designed to be **forked and customized** — but the
+shared core must stay operator-neutral, deduplicated, and upgrade-safe. This
+guide is the contract for changing framework-owned files.
+
+> Governance model and layer rationale: `constitution/LAYER-MODEL.md` (source-only).
+> Requirements & phase history: `docs/design/framework-constitution/`.
+
+---
+
+## 1. The layer model (where does my change go?)
+
+| Layer  | What                                                          | Owner            | On upgrade                              | File(s)                                      |
+| ------ | ------------------------------------------------------------- | ---------------- | --------------------------------------- | -------------------------------------------- |
+| **L0** | Constitution — the non-negotiable law (hard gates)            | Framework        | **Overwritten**                         | `CONSTITUTION.md`                            |
+| **L1** | Standards & guides — how to do the work well                  | Framework        | Overwritten; user delta → `*.local.md`  | `STANDARDS.md`, `guides/*`                   |
+| **L2** | Persona (SOUL) — agent name, tone, role                       | User (init)      | **Never overwritten**                   | `SOUL.md` (+ optional `SOUL.local.md`)       |
+| **L3** | Operator (USER) — human identity, prefs, policy               | User (init)      | **Never overwritten**                   | `USER.md` (+ optional `USER.local.md`)       |
+| **L4** | Project / runtime mechanism — per-repo deltas; harness wiring | Repo / framework | Project user-owned; runtime overwritten | `<repo>/AGENTS.md`, `runtime/<h>/RUNTIME.md` |
+
+**The one sentence a user can rely on:** edit `SOUL.md` / `USER.md` and the
+`.local.md` overlays — they survive every upgrade. To change framework behavior,
+add a `.local.md` overlay; never edit a framework-owned file in place.
+
+---
+
+## 2. Operator hygiene (PII / secrets prohibition) — **blocking**
+
+Framework-owned files ship publicly. They **must not** contain:
+
+- Operator or personal identity (names, handles, pronouns, accessibility notes).
+- Private `$HOME` paths, private hostnames, or domains.
+- Secrets, tokens, or credentials (use `~/.config/mosaic/credentials.json`; the
+  hook URL soft-degrades via `${OPENBRAIN_URL}`).
+
+This is enforced by `tools/quality/scripts/verify-sanitized.sh`, wired **blocking**
+in CI (`.woodpecker/ci.yml`). It runs two rule classes: structural (private-`$HOME`
+defaults, dead paths, unrendered tokens) and a labeled current-contaminant denylist.
+Run it locally before pushing:
+
+```bash
+bash packages/mosaic/framework/tools/quality/scripts/verify-sanitized.sh
+```
+
+Operator-specific behavior belongs in **your** `SOUL.md`/`USER.md`/`*.local.md`,
+never in the shared core. (The "framework-PR firewall" in `CONSTITUTION.md` §4
+states this as law for agents opening framework PRs.)
+
+---
+
+## 3. Dedup rule — one source, everyone references it
+
+Hard gates live in **`CONSTITUTION.md` (L0) only**. `AGENTS.md`, `STANDARDS.md`,
+and every `runtime/<h>/RUNTIME.md` **reference** the law — they never restate it.
+Restating a gate is a defect: it creates two sources that drift. If you find a
+gate duplicated outside L0, delete the copy and point to L0.
+
+`AGENTS.md` is a thin dispatcher (load order + guide router + the tier-aware
+self-load). Keep it that way; new procedure goes in `guides/*` (on-demand), not
+in the resident core.
+
+---
+
+## 4. Resident line-count ceiling — **blocking**
+
+The framework-owned files injected by value (`CONSTITUTION.md`, `AGENTS.md`, each
+`runtime/<h>/RUNTIME.md`) are budgeted by **line count** — never by word count
+(a word cap forces paraphrasing the law, the exact drift vector we removed).
+
+```bash
+bash packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh
+```
+
+Wired blocking in CI. Gate **wording** stays intact; if a file legitimately needs
+more lines, raise its ceiling in the script deliberately (in the same PR, with
+rationale). The per-harness _total_ resident prompt (which also sums the user's
+`SOUL.md`/`USER.md`) is a `mosaic doctor` runtime advisory — CI cannot see user
+files, so it is out of CI scope by design (DESIGN §7).
+
+---
+
+## 5. Dual-installer parity rule
+
+Two installers seed and migrate `~/.config/mosaic/`:
+
+- **`framework/install.sh`** (bash) — the canonical installer.
+- **`packages/mosaic/src/config/file-adapter.ts`** (TS) — the wizard path.
+
+**Any change to seed lists, overwrite/preserve semantics, or migration MUST land
+in BOTH**, validated by the **shared fixture suite**:
+
+- `framework/tools/quality/scripts/test-install-migration.sh` (bash matrix)
+- `packages/mosaic/src/config/file-adapter.test.ts` (vitest)
+
+Both assert the same behavior: framework-owned files overwrite (backup-once to
+`*.pre-constitution.bak`); user-seeded files seed-if-absent; `SOUL.md`/`USER.md`/
+`*.local.md`/`credentials` are preserved. A change in one installer without the
+other (and its fixtures) is incomplete.
+
+---
+
+## 6. Adding a harness adapter
+
+A harness (runtime) is wired by:
+
+1. `runtime/<h>/RUNTIME.md` — **mechanism only** (subagent syntax, hook/MCP wiring,
+   injection method). No restated gates (see §3).
+2. Launcher emission in `src/commands/launch.ts` — how the composed contract reaches
+   the harness (system-prompt append vs. instructions file). Add the harness to the
+   `RuntimeName` union and the runtime-path map.
+3. `mosaic compose-contract <harness>` works automatically once the runtime path
+   exists (it composes base + `*.local.md` overlays for that harness).
+
+Then add a row to the compliance matrix (§8) and mark which gates are mechanical
+vs. resident-only for the new harness.
+
+---
+
+## 7. Re-contamination rule
+
+A green sanitization gate is not permanent. Before every PR:
+
+- Do not reintroduce operator identity, private paths, or secrets (§2).
+- Do not copy a gate out of L0 (§3).
+- Do not add an unrendered template token or a dead path to a shipped file.
+
+If `verify-sanitized.sh` goes red, that diff **is** your worklist — fix it, don't
+suppress it.
+
+---
+
+## 8. Harness × gate compliance matrix
+
+How each gate is enforced per harness. **Mechanical** = a hook/CI check the agent
+cannot bypass. **Resident** = injected contract prose (strong, but not a hard stop).
+**CI** = repo-side, harness-independent.
+
+| Gate / mechanism                              | Claude      | Codex            | OpenCode         | Pi               |
+| --------------------------------------------- | ----------- | ---------------- | ---------------- | ---------------- |
+| Contract injection (resident-by-value)        | append SP   | instructions     | `AGENTS.md`      | append SP        |
+| Operator overlays (`*.local`, composed)       | ✅          | ✅               | ✅               | ✅               |
+| Bare-launch self-load (Tier-3, read L0)       | ✅          | ✅               | ✅               | ✅               |
+| Sanitization (no PII) — `verify-sanitized`    | CI ✅       | CI ✅            | CI ✅            | CI ✅            |
+| Resident budget ceiling                       | CI ✅       | CI ✅            | CI ✅            | CI ✅            |
+| Migration parity (5-fixture, both installers) | CI ✅       | CI ✅            | CI ✅            | CI ✅            |
+| `no-memory-write` (PreToolUse hook)           | **mech ✅** | resident-only ⚠️ | resident-only ⚠️ | resident-only ⚠️ |
+| QA / typecheck (PostToolUse hooks)            | **mech ✅** | resident-only ⚠️ | resident-only ⚠️ | resident-only ⚠️ |
+| Native heartbeat (fleet `ps` model/status)    | sidecar     | sidecar          | sidecar          | **native ✅**    |
+
+⚠️ **Hook-parity gap (tracked, v2):** the mechanical PreToolUse/PostToolUse hooks
+exist for Claude Code only. On Codex/OpenCode/Pi those gates are currently enforced
+by the resident contract + CI, not by a per-tool hook. Closing hook parity is a
+**v2** item, not part of this alpha.
+
+---
+
+## 9. Known limitations (accepted residual risks)
+
+These are accepted with rationale (DESIGN §9); they are documented, not bugs:
+
+- **Bare-launch overlays are base-only.** A harness started without `mosaic` never
+  ran the composer, so `*.local.md` overlays are not applied. Mitigated by the
+  unconditional Tier-3 self-load + the `mosaic doctor` nudge in `AGENTS.md`; not
+  eliminated. Relaunch via `mosaic <harness>` to pick up overlays.
+- **Bare-launch drift is undetected by `mosaic doctor`** (the launcher never ran).
+- **Codex/OpenCode/Pi hook parity** is a tracked v2 gap (§8).
+- **Live-launch cross-harness verification** is v2; the alpha verifies the composer
+  by unit test (per-tier anchor + Tier-3 byte-equality), not a live launch.
+
+**Deferred to v2 (explicit):** `constitution/` deploy directory; capability JSON
+adapters; 3-way merge; `policy/*.md` composition; per-layer version stamps as a
+migration driver.
+
+---
+
+## 10. PR checklist
+
+- [ ] No operator identity / private paths / secrets (`verify-sanitized.sh` green).
+- [ ] No gate restated outside `CONSTITUTION.md` (§3).
+- [ ] Resident budget green (`check-resident-budget.sh`).
+- [ ] Seed/migration changes landed in **both** installers + shared fixtures (§5).
+- [ ] New harness → compliance-matrix row updated (§8).
+- [ ] `prettier --check` + `pnpm lint` + `pnpm typecheck` + `pnpm test` green.

packages/mosaic/framework/tools/quality/scripts/check-resident-budget.sh

@@ -0,0 +1,93 @@
+#!/usr/bin/env bash
+# check-resident-budget.sh — resident line-count ceiling (R9 / DESIGN §7).
+#
+# Budgets the *container* (line count) of the framework-owned files that are
+# injected into every agent's context by value — the Constitution (L0), the
+# AGENTS dispatcher, and each runtime RUNTIME.md slice. Gate *wording* is never
+# capped (a word cap forces paraphrasing law — the exact drift vector P3 killed);
+# only the file's line count is bounded, so prose creep is caught in review.
+#
+# This is the CI-enforceable half of the budget. The per-harness *total* resident
+# prompt (which also includes user-generated SOUL.md/USER.md and the per-tier
+# slice) is summed by `mosaic doctor` as a runtime advisory — CI cannot see user
+# files, so it is deliberately out of scope here (DESIGN §7).
+#
+# Usage:  check-resident-budget.sh [--self-test]
+# Exit:   0 = all within budget · 1 = a file exceeds its ceiling · 2 = self-test failed
+set -uo pipefail
+
+FW="$(cd "$(dirname "${BASH_SOURCE[0]}")/../../.." && pwd)" # packages/mosaic/framework
+
+# Per-file ceilings (lines). Headroom above current counts; tighten as files settle.
+# Format: "<relative-path>:<max-lines>"
+CEILINGS=(
+  "defaults/CONSTITUTION.md:120"
+  "defaults/AGENTS.md:120"
+  "runtime/claude/RUNTIME.md:90"
+  "runtime/codex/RUNTIME.md:90"
+  "runtime/opencode/RUNTIME.md:90"
+  "runtime/pi/RUNTIME.md:90"
+)
+
+# check_file <abs-path> <max> → echoes "<n>"; returns 0 if n<=max, 1 otherwise.
+check_file() {
+  local path="$1" max="$2" n
+  n=$(wc -l <"$path" 2>/dev/null || echo 0)
+  n=$((n + 0))
+  echo "$n"
+  [ "$n" -le "$max" ]
+}
+
+run_budget() {
+  local fail=0 rel max abs n
+  printf '%-32s %8s %8s   %s\n' "FILE" "LINES" "CEILING" "STATUS"
+  for entry in "${CEILINGS[@]}"; do
+    rel="${entry%%:*}"
+    max="${entry##*:}"
+    abs="$FW/$rel"
+    if [ ! -f "$abs" ]; then
+      printf '%-32s %8s %8s   %s\n' "$rel" "-" "$max" "MISSING"
+      fail=1
+      continue
+    fi
+    n=$(check_file "$abs" "$max")
+    if [ "$n" -le "$max" ]; then
+      printf '%-32s %8s %8s   %s\n' "$rel" "$n" "$max" "ok"
+    else
+      printf '%-32s %8s %8s   %s\n' "$rel" "$n" "$max" "OVER BUDGET"
+      fail=1
+    fi
+  done
+  return "$fail"
+}
+
+self_test() {
+  local tmp rc
+  tmp=$(mktemp)
+  # 3 lines, ceiling 5 → within budget (rc 0)
+  printf 'a\nb\nc\n' >"$tmp"
+  check_file "$tmp" 5 >/dev/null
+  rc=$?
+  if [ "$rc" -ne 0 ]; then echo "self-test FAIL: under-budget file flagged"; rm -f "$tmp"; return 2; fi
+  # 6 lines, ceiling 5 → over budget (rc 1)
+  printf 'a\nb\nc\nd\ne\nf\n' >"$tmp"
+  check_file "$tmp" 5 >/dev/null
+  rc=$?
+  if [ "$rc" -ne 1 ]; then echo "self-test FAIL: over-budget file not flagged"; rm -f "$tmp"; return 2; fi
+  rm -f "$tmp"
+  echo "self-test OK"
+  return 0
+}
+
+if [ "${1:-}" = "--self-test" ]; then
+  self_test
+  exit $?
+fi
+
+if run_budget; then
+  echo "Resident budget: all framework-owned resident files within ceiling."
+  exit 0
+else
+  echo "Resident budget EXCEEDED — trim prose or raise the ceiling deliberately (see DESIGN §7)." >&2
+  exit 1
+fi