R76.S1 — Session seal packet

1. Gate status

Audit approved: docs/audits/r76-s1-session-seal-audit.md
Contract approved: docs/contracts/r76-s1-session-seal-contract.md
This packet gates implementation per CLAUDE.md §6.

2. Target file

docs/session-seal-s8.md — new file, single commit with the other 4 chain artifacts.

3. Writing order and per-section budget

#	Section	Word budget	Primary source	Lines (est.)
0	Header + frontmatter	80-120	Contract §2	25-35
1	What shipped	180-250	CLAUDE.md §9.1 + §10 + ADR-004	40-55
2	The nine waves	140-200	`git log --oneline` + audit §3.1	20-30
3	Key decisions	140-200	Memory + CLAUDE.md §9.1	20-30
4	Architectural deliverables	140-200	CLAUDE.md §9.1 shipped table	15-20
5	Legacies into R76	80-120	MEMORY.md carry-over list	8-12
6	R76 bridge summary	80-120	Current branch log (`git log --all --oneline`)	8-12
7	Phase B Merkle anchor	60-100	Contract §4 (TBD placeholders)	8-12
8	Next	80-140	Memory R76 candidate scope + p1.x prompts	10-15
—	Close attribution	20-40	Contract §9 (versioning note)	3-5
	Total	~1080-1500 words		~160-230 lines

Target ~200-250 lines total, comfortably within the contract §7 budget of 150-400.

4. Per-section content plan

Frontmatter per contract §2 (verbatim). Body header: session number, round, theme, kickoff/sealed dates, wall-clock duration, wave count, seal commit on main: TBD, Merkle root: TBD (first TBD occurrences).

§1 — What shipped

Three subsections:

1a. Phase 0 sub-task completion — 28/28 table by group (P0.1-P0.9) with concept + shipping wave. ADR-005 §Decision footnote for P0.5.
1b. Tool surface — 14 MCP tools, broken down: β (5) + ζ (4) + η (2) + ε (1) + system (2). ADR-004 R75 Wave H amendment reference.
1c. Greek concept maturity — 8/15 at colibri_code: partial (α β γ δ ε ζ η ν) per ADR-006. 7 remain none (θ ι κ λ μ ξ π).
1d. Tests — 1001 at 09d462f8 → 1085 at R76 Wave 2 close; +25 / +16 / +33 / +10 breakdown.
1e. Stack — TS 5.3+, MCP SDK, Zod 3.23, better-sqlite3, merkletreejs 0.6.0, gray-matter, Jest ESM. Chevrotain spec-only for Phase 1+ κ.

§2 — The nine waves

Table with columns: Wave, Date, Commit sentinels, Theme, PR list. Dates are 2026-04-16 through 2026-04-18. PRs #115-#151. Memory-note reference line below the table.

§3 — Key decisions resolved during S8

Numbered list of 4:

server_info phantom → STRUCK.
task_update vs task_transition → KEPT MERGED.
ANTHROPIC_API_KEY → call-time validation.
Wave I δ stubs → ADR-005 §Decision re-read (stubs, not “deferred”).

Each item: 2-4 sentences, cite the ADR / source file.

§4 — Architectural deliverables

Bulleted list, one line per shipped subsystem:

src/server.ts + 5-stage α middleware
src/db/ (better-sqlite3, WAL, migrations)
src/domains/tasks/ (FSM + 5 tools)
src/domains/skills/ (SKILL.md loader + capability index + skill_list)
src/domains/trail/ (hash-chained records + audit_verify_chain)
src/domains/proof/ (merkletreejs + merkle_finalize + merkle_root)
src/domains/integrations/ (library-only Claude API + MCP bridge + notifications)
src/domains/router/ (library-only δ stubs per ADR-005)

§5 — Legacies into R76

Bulleted carry-over from MEMORY.md:

startup — subprocess smoke flake (local-only)
merkletreejs @types gap
.claude/settings.local.json drift
Queued MCP writebacks (PR body only)
Cross-worktree leak from Wave C not diagnosed

§6 — R76 bridge summary

One paragraph + one short bullet list. R76 = Phase 0→1 bridge round. PRs #152-#16X. Hygiene wave (H1-H6) + plan wave (P1-P3) + ceremony wave (this doc + seal-audit). No code deltas.

§7 — Phase B Merkle anchor

Two paragraphs:

Root hash: TBD — filled by Sigma during R76 Phase B (merkle_finalize + merkle_root). Anchors all thought_records in the R76 session chain.
Chain verification: audit_verify_chain green across R76. Final thought_record(reflection) precedes merkle_finalize per CLAUDE.md §7 ordering rule.

§8 — Next

4 bullets:

R76 Phase B completes with Merkle root.
R77+: hygiene tail (mirror resync, doc counts, local drift).
R81 kicks off Phase 1 κ per p1.1-kappa-rule-engine.md.
R91+ kicks off Phase 1.5 δ graduation per p1.5-delta-router-graduation.md, subject to ADR-005 §Implementation triggers.

§9 — Close attribution

Two-line footer: “First session seal after R75 PLAN-RED KILL. Governed by docs/agents/sigma-orchestrator.md §4 Phase B.”

5. Commit plan

Single commit at the end of the 5-step chain:

docs(r76-s1): first-ever session seal doc — docs/session-seal-s8.md for Phase 0 close

Message body per task prompt. Co-author trailer per CLAUDE.md.

Stage manifest:

docs/session-seal-s8.md (new)
docs/audits/r76-s1-session-seal-audit.md (new)
docs/contracts/r76-s1-session-seal-contract.md (new)
docs/packets/r76-s1-session-seal-packet.md (this file, new)
docs/verification/r76-s1-session-seal-verification.md (new, written last)

6. Out of scope (reminder)

Merkle root: Sigma Phase B.
Seal commit SHA: Sigma Phase B (post-merge).
docs/5-time/roadmap.md: R76.P3 territory, already landed.
CLAUDE.md / AGENTS.md / ADRs: already landed in Wave I or earlier.

7. Risks + mitigations

Risk	Mitigation
Wave-to-PR mapping drifts from memory	Cross-check `git log` at the worktree SHA before writing
YAML frontmatter breaks gray-matter	No unquoted colons in `description`; lesson from R73 hotfix (`df0282bd`)
Tests regress	Docs-only task; `npm test` should no-op; if regression, stop + investigate
Seal doc rejected for over-length	Hard stop at 300 lines; trim §1e and §3 prose first

8. Definition of done (packet level)

docs/session-seal-s8.md written per the 8-section plan.
Line count in 200-300 range.
Two TBD placeholders (merkle_root in frontmatter + body; seal commit in body header).
Verification doc produced.
All five files staged in a single commit.
npm run build && npm run lint && npm test green.

Packet for R76.S1. Gates the implementation step.