Kjell Tore Guttormsen
204665e90b
Slice SB-S2 (Evolution loop): operator-invoked consolidation engine → profile diff (threshold-promotion N=3, conflict keep-both with distinct ids, decay-flag 90d, provenance-gated) + brain/consolidation-state.json sidecar + zero-dep session-start consolidation-due nudge + scaffold-ensure. Light-Voyage-hardened: brief-reviewer (REVISE→folded: state-file→sidecar fix), plan-critic (REPLAN 58→folded: distinct-id model, gather reads bodies, hook-tests-run-separately), scope-guardian (ALIGNED). Operator scope: journal deferred · deterministic CLI no-agent · motor-only no-reader. Defaults N=3/90d, version → 0.5.2. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01RigJBiRFNtFZKCz21qNbQ4
160 lines
22 KiB
Markdown
160 lines
22 KiB
Markdown
# Implementation Plan — SB-S2 (Evolution loop)
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> **Status:** review-hardened (`plan-critic` REPLAN 58→folded; `scope-guardian` ALIGNED). Ready for operator approval / "go".
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> **Brief:** `brief-sb-s2.md` (review-hardened). **Arc:** `architecture.md`. **Predecessors:** SB-S0/S1 (`scripts/brain/`, v0.5.1).
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> **Review delta (2026-06-23):** B1 conflict id → distinct (primary `mintEntityId(key)` + alt `mintContentId('observed-alt:'+key+'::'+value+'::'+date)`, no duplicate ids); B2 `--gather` reads published files directly for bodies (not `listPublished`), tributary reads CUT; B3 hook tests run SEPARATELY (`node --test hooks/scripts/__tests__/`) as an explicit step — NOT via test-runner.sh (which runs no hook test) → SC7 reworded, assertion floor +0; M4 new hook-test `.mjs` authored via Bash-heredoc (pathguard-safe under either guard); M5 scaffold-ensure runs UNCONDITIONALLY (fresh-install path); M6 `\\n` escaped-newline idiom; M8 per-step commit msg + revert target; minors: single-line value validation, static-decay-exempt, tsx fail-loud.
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> **Scope:** the deterministic consolidation engine + `brain consolidate` CLI (operator-invoked, operator-gated) + the session-start consolidation-due nudge + scaffold-ensure. **No journal-capture, no new agent, no profile.md reader, no supersede, no cross-silo threading, no auto-apply, no AI at session-start** (brief §7).
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---
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## 1. What SB-S2 delivers (recap)
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A new PURE TS engine `scripts/brain/src/consolidate.ts` (`proposeDiff` + `applyDiff` over the SB-S0 two-layer `ProfileDoc`), a `brain consolidate` CLI (`--gather` / `--propose` / `--apply --confirm`) that closes the loop operator-gated, a brain data-root sidecar `brain/consolidation-state.json` for the last-run timestamp, and a zero-dep **consolidation-due nudge** + **scaffold-ensure** edit to `hooks/scripts/session-start.mjs`. Count-neutral (no agent/command/ref/skill). All TDD; gate stays green; floors rise.
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## 2. Package additions (`scripts/brain/`) — extend the existing package
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```
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scripts/brain/
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src/
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consolidate.ts # NEW — Candidate/ProfileDiff types + proposeDiff + applyDiff (pure) + consolidation-state IO
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cli.ts # EDIT — add `consolidate` dispatch (--gather/--propose/--apply)
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(types.ts, id.ts, profile.ts, ingest.ts, scaffold.ts, dataRoot.ts unchanged)
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tests/
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consolidate.test.ts # NEW — engine: per-rule (SC1a–g) + immutability + round-trip + idempotency
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consolidate-cli.test.ts # NEW — CLI gating + candidate-validation + sidecar (SC5)
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hooks/scripts/
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session-start.mjs # EDIT (existing → pathguard-safe) — scaffold-ensure + consolidation-due nudge
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__tests__/
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session-start-brain-consolidation.test.mjs # NEW — SC6 (mirror of session-start-trends-staleness.test.mjs)
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```
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No new dep (engine is pure TS; the hook stays zero-dep). The brain `test` script already globs `tests/*.test.ts`.
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## 3. Module designs
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### 3.1 `consolidate.ts` — types
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```ts
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import { mintEntityId, mintContentId, slugify } from "./id.js";
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import { SCHEMA_VERSION } from "./types.js";
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import type { ProfileDoc, ProfileFact, Provenance } from "./types.js";
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export interface Candidate {
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key: string; // the fact's stable label/topic/concept
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value: string; // single-line (no embedded newline/CR — profile grammar)
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provenance: Provenance; // published | human | ai-draft
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source: string; // e.g. "published:<id>" | "manual"
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observed_date: string; // YYYY-MM-DD
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}
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export interface ProfileDiff {
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additions: ProfileFact[]; // new dynamic facts (primary + conflict-alt)
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evidenceBumps: { id: string; newCount: number; last_seen: string }[];
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promotions: { id: string }[]; // dynamic→static (post-bump count ≥ N)
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conflicts: { primaryId: string; primaryValue: string; altId: string }[]; // both retained, distinct ids
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staleFlags: { id: string; last_seen: string; daysStale: number }[];
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}
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export interface ConsolidateOpts { promoteThreshold?: number; decayDays?: number } // defaults 3 / 90
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const OBSERVED_KIND = "observed";
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```
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### 3.2 `consolidate.ts` — `proposeDiff` (pure; the classification heart) — id model fixes plan-critic B1
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**Id model (the B1 fix — no duplicate ids):**
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- A concept's **primary fact** id = `mintEntityId({ kind: OBSERVED_KIND, key })` (key-only → one primary per concept).
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- A conflict **alt fact** id = `mintContentId(\`observed-alt:${key}::${value}::${observed_date}\`)` (SB-S1's verbatim sha256[:12] — byte-distinct, so primary and alt never collide and two alts for the same concept differ by value/date). Matching always starts from the *candidate's* `key`, so we never need to recover a key from an existing fact.
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```ts
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proposeDiff({ current, candidates, today, opts }): ProfileDiff
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```
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- `N = opts.promoteThreshold ?? 3`, `DECAY = opts.decayDays ?? 90`.
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- Build a `byId` lookup over `current.dynamic ∪ current.static`. (Folded `profile-field` static seeds use a DIFFERENT kind → their ids never collide with `observed` ids → immutable, SC1g.)
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- For each candidate:
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- `provenance === 'ai-draft'` → skip entirely (SC1b).
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- `primaryId = mintEntityId({kind:OBSERVED_KIND, key})`; `prev = byId.get(primaryId)`.
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- **no `prev`** → `additions` gets a new dynamic `ProfileFact` (`id:primaryId`, `evidence_count:1`, `first_seen:observed_date`, `last_seen:today`, `status:'active'`, `provenance`) (SC1a).
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- **`prev`, `prev.value === candidate.value`** → `evidenceBumps` (`newCount = prev.evidence_count+1`, `last_seen:today`); if `prev` is in `dynamic` AND `newCount ≥ N` → also `promotions[{id:primaryId}]` (SC1c/SC1d).
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- **`prev`, `prev.value !== candidate.value`** → CONFLICT (SC1e): build an alt fact `{id: mintContentId(\`observed-alt:${key}::${candidate.value}::${observed_date}\`), value:candidate.value, dynamic, evidence_count:1, …}`, push it to `additions`, record `conflicts[{primaryId, primaryValue: prev.value, altId}]`, and leave `prev` UNTOUCHED (no bump). **No supersede** (S3). (If the alt id already exists from a prior run → treat as the same-value bump path on the alt id, so re-running is idempotent.)
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- After the candidate pass: `staleFlags` = every **`current.dynamic`** fact whose `daysSince(last_seen) > DECAY` (SC1f). **Static facts are decay-exempt by design** (promoted = stable). Informational only — no mutation.
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- **Purity:** never mutate `current`/`candidates` (build new objects); SC2 asserts inputs structurally unchanged.
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### 3.3 `consolidate.ts` — `applyDiff` (pure) + sidecar IO
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- `applyDiff(current, diff): ProfileDoc` — returns a NEW doc: append `additions` (which already includes both new primary facts AND conflict alt facts) to `dynamic`; apply `evidenceBumps` (update count+last_seen on the fact with the matching id); move `promotions` facts from `dynamic`→`static`. `conflicts[]` is informational (the alt fact is already in `additions`); `staleFlags` cause NO mutation. **Id-uniqueness invariant:** because primary ids (`mintEntityId(key)`) and alt ids (`mintContentId(...)`) are byte-distinct, no two facts share an id — so the bump/promote target is unambiguous and the doc stays well-formed. Output round-trips through `parseProfile`/`serializeProfile` (SC3).
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- **Sidecar IO** (the only impure bit, kept here for cohesion): `readConsolidationState(): {last_run: string|null}` + `writeConsolidationState(date)` over `dataRoot('brain/consolidation-state.json')` (`{ "last_run": "YYYY-MM-DD" }`). Tiny JSON; absent → `{last_run:null}`.
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### 3.4 `cli.ts` — `consolidate` dispatch (extend the SB-S1 router)
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Add `command === "consolidate"` with a `--gather` / `--propose` / `--apply` mode (the parseFlags idiom already present):
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- **`--gather [--json]`** — read-only. Reads the published gold corpus **directly** (`readdir(dataRoot('ingest/published'))` → `parsePublishedRecord` each — `listPublished()` returns no body/`captured_at`, so it can't feed extraction; fixes plan-critic B2), filters to records with `published_date > readConsolidationState().last_run` (null → all), and prints a digest of `{id, published_date, body}` per new record + the current `brain/profile.md` facts (parsed), for the **invoking session** to turn into a `Candidate[]` JSON. **Tributary newest-timestamp reads are CUT** (informational-only, underspecified — the published corpus is the S2 signal; plan-critic M12). Writes nothing.
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- **`--propose --candidates <file.json>`** — read + **validate** each candidate against the `Candidate` shape: every item has key/value/provenance∈{human,published,ai-draft}/source/observed_date, AND **`key`/`value` contain no newline or carriage-return** (the profile grammar is single-line — a `\n` would corrupt serialization; plan-critic M9). Any violation → non-zero exit, no write (SC5). `proposeDiff` over the current profile. Write `brain/pending-diff.json` (the typed `ProfileDiff`) AND `brain/pending-diff.md` (operator-readable: sections Additions / Evidence-bumps / Promotions / ⚠ Conflicts / Stale, neutral framing). Print both paths. Does NOT touch `profile.md`.
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- **`--apply --diff <path> --confirm`** — require `--confirm` (else refuse). Read the JSON diff, `parseProfile(brain/profile.md)`, `applyDiff`, write `brain/profile.md` (`serializeProfile`), then `writeConsolidationState(today())`. The ONLY path that writes the profile.
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- Usage text + exit 2 on misuse. `init`/`ingest`/`published` branches unchanged (regression-guarded).
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### 3.5 `hooks/scripts/session-start.mjs` — scaffold-ensure + consolidation-due nudge (Edit, zero-dep)
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- Add `readdirSync` to the existing `node:fs` import (line 5).
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- **Helpers (twins of `trendsNewestCapture`, lines 38–52):**
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- `brainLastRun(path)` — `JSON.parse(readFileSync)` of `consolidation-state.json` → `last_run` or null (try/catch → null).
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- `countPublished(dir)` — `existsSync(dir) ? readdirSync(dir).filter(f=>f.endsWith('.md')).length : 0` (no parse — cost-bounded).
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- **Scaffold-ensure — UNCONDITIONAL** (fixes plan-critic M5: the `reminders`/context block runs only inside `if (existsSync(STATE_FILE))`, so a fresh install (else branch ~line 432) would never scaffold/nudge). Place it next to the M0 migration block (~line 73), BEFORE the state-file branch, so it always runs: `for (const d of ['brain/journal','ingest/inbox','ingest/published']) mkdirSync(join(getDataRoot(''),d),{recursive:true})` (idempotent, zero-dep; confirm `getDataRoot('')` returns the bare data root — step 1). The optional "run `brain init` to seed your profile" nudge is appended to **`context` directly** (not `reminders`) right after scaffold-ensure when `!existsSync(join(getDataRoot('brain'),'profile.md'))`, so it survives the no-state-file path.
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- **Consolidation-due nudge** (inside the reminders block, beside the trends nudge ~line 342 — an established user with published content has a state file, so the reminders path is correct here). **Use the `\\n` escaped-newline idiom** (the file un-escapes once via `context.replace(/\\n/g,'\n')` at line 479 — a raw `\n` would mis-render; plan-critic M6):
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```js
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const published = countPublished(join(getDataRoot('ingest'), 'published'));
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const lastRun = brainLastRun(join(getDataRoot('brain'), 'consolidation-state.json'));
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const daysSinceRun = daysSince(lastRun);
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if (published > 0 && (lastRun === null || (daysSinceRun !== null && daysSinceRun >= 7))) {
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const since = lastRun === null ? 'never run' : `${daysSinceRun}d ago`;
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reminders += `- ${published} published post(s) captured, last brain consolidation ${since}. Run \\\`brain consolidate\\\` to evolve your profile.\\n`;
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}
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```
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Null-safe + fires only when published records exist (a never-used brain never nags — the trend-nudge discipline). **No `profile.md` parse.**
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## 4. Files created / edited
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**Created:** `scripts/brain/src/consolidate.ts` · `scripts/brain/tests/{consolidate,consolidate-cli}.test.ts` · `hooks/scripts/__tests__/session-start-brain-consolidation.test.mjs` · `docs/second-brain/consolidation-loop.md`.
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**Edited:** `scripts/brain/src/cli.ts` (+consolidate) · `hooks/scripts/session-start.mjs` (scaffold-ensure + nudge + `readdirSync` import) · `scripts/test-runner.sh` (BRAIN floor + assertion floor) · `docs/second-brain/architecture.md` (flip SB-S2 row).
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**Conditional (Q2 = bump to 0.5.2):** `plugin.json` + README badge + CLAUDE.md header + CHANGELOG; polyrepo release via `release-plugin.mjs` (tag + catalog), pushed per window + confirm.
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## 5. TDD test plan (failing-first) → success criteria
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| Test | Asserts | SC |
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|---|---|---|
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| `consolidate.test.ts` | add / reject-ai-draft / evidence-bump / promote-at-3 / **conflict-keep-both with DISTINCT primary+alt ids, old fact untouched** / decay-flag (dynamic only) / **static-decay-exempt** / folded-immutable; input immutability; `applyDiff∘proposeDiff` round-trips via parse/serialize; idempotent (re-run → bumps not dup facts, alt-id stable) | SC1a–g, SC2, SC3, SC4 |
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| `consolidate-cli.test.ts` | temp-dir: `--gather` reads published bodies (filtered by `published_date>last_run`) + leaves `profile.md` byte-unchanged; `--propose` leaves profile.md unchanged, writes `pending-diff.{md,json}`, REJECTS a malformed candidate file AND a candidate whose value contains `\n` (non-zero, no write); `--apply --confirm` writes profile.md + `consolidation-state.json`; `--apply` without `--confirm` refuses; `init`/`ingest`/`published` still work | SC5 |
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| `session-start-brain-consolidation.test.mjs` (authored via **Bash-heredoc** — pathguard-safe) | subprocess + isolated HOME/`LINKEDIN_STUDIO_DATA` (trends-staleness harness): nudge fires (rendered on its own line) when published records exist + last_run stale/absent; silent when brain absent / no published; scaffold-ensure runs on the fresh-install (no-state-file) path; hook still emits valid JSON | SC6 |
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| (separate) `node --test hooks/scripts/__tests__/` | the new SC6 test + all existing hook tests pass — **run as an explicit step, NOT via test-runner.sh** (which runs no hook test; plan-critic B3) | SC6 |
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| (gate) `scripts/test-runner.sh` | green; floors hold; brain ≥ new floor; counts unchanged; `compile-hooks.py --check` clean if hooks.json regenerated. (No new test-runner section → assertion floor +0.) | SC7 |
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Each test written **before** its module (iron law). **Circuit-breakers:** halt if the engine round-trip (SC3) can't be made green, or if the full gate (step 8) is red.
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## 6. Step sequence (each step: TDD red→green; Checkpoint = commit with the named message; On-failure → revert the named target + halt + report)
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1. **Verify-first:** re-confirm `proposeDiff` inputs against `types.ts` (`ProfileFact`/`ProfileDoc`/`Provenance`) + `mintEntityId`/`mintContentId`/`slugify` signatures + `daysSince`/`getDataRoot('')` behavior in session-start.mjs (does the empty subdir return the bare data root?). **tsx fail-loud:** assert `scripts/brain/node_modules/.bin/tsx` present (the gate brain section *warn-skips* if absent — for this slice that would let the gate go green with SB-S2's tests never run; `npm install` and FAIL if still absent; plan-critic M11). *On-failure: stop, report — the slice cannot be verified.*
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2. TDD `consolidate.ts` types + `proposeDiff` per-rule (`consolidate.test.ts`, SC1a–g + SC2; incl. the distinct primary/alt id assertion). *Checkpoint: `feat(linkedin-studio): SB-S2 consolidation engine — proposeDiff classification [skip-docs]`. On-failure: revert `scripts/brain/src/consolidate.ts` + its test.*
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3. TDD `applyDiff` + round-trip + idempotency (SC3/SC4). *Circuit-breaker: if the parse/serialize round-trip can't be made green, the id/shape is wrong — halt.* *Checkpoint: fold into step-2 commit or `feat(...): SB-S2 applyDiff + round-trip [skip-docs]`.*
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4. TDD sidecar IO (`readConsolidationState`/`writeConsolidationState`) — fold into the consolidate-cli temp-dir tests. *Checkpoint with step 5.*
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5. Extend `cli.ts` `consolidate` (gather/propose/apply); TDD `consolidate-cli.test.ts` (SC5) incl. candidate validation (shape + no-newline), no-confirm refusal, `--gather` body-read, `init`/`ingest`/`published` regression. *Checkpoint: `feat(linkedin-studio): SB-S2 brain consolidate CLI [skip-docs]`. On-failure: revert `cli.ts` + the cli test.*
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6. Edit `session-start.mjs` (import `readdirSync`; UNCONDITIONAL scaffold-ensure near the migration block; consolidation-due nudge in the reminders block, `\\n` idiom); author `session-start-brain-consolidation.test.mjs` **via Bash-heredoc** (pathguard-safe); run `node --test hooks/scripts/__tests__/` (the WHOLE hook suite, since the gate doesn't — SC6 + no hook regression). If `hooks.json` shape unchanged (only script body edited) no recompile; else `compile-hooks.py` + verify `--check`. *Checkpoint: `feat(linkedin-studio): SB-S2 session-start scaffold-ensure + consolidation nudge [skip-docs]`. On-failure: `git checkout hooks/scripts/session-start.mjs` (do NOT leave the hook emitting invalid JSON) + halt.*
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7. Write `docs/second-brain/consolidation-loop.md` (CLI usage, engine rules, the candidate-file schema as the session↔engine contract, the operator-gate, honest limits incl. no-reader-until-S3 + the loop's value-depends-on-extraction caveat). *Checkpoint: `docs(...)`.*
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8. Bump `scripts/test-runner.sh` `BRAIN_TESTS_FLOOR` to the real `tests N` (assert the brain suite RAN — `BR_TESTS` non-empty, not warn-skipped). **`ASSERT_BASELINE_FLOOR` unchanged (+0): SB-S2 adds NO new test-runner section** (the hook test runs separately, the new TS tests run inside the existing brain `npm test` which contributes one unchanged `pass()` line) — confirm by reading the printed `TOTAL_CHECKS` is unchanged. Run the FULL gate green AND the hook suite green. *Circuit-breaker: no red gate committed.* *Checkpoint: `chore(...): SB-S2 gate brain floor`.*
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9. Flip `architecture.md` SB-S2 row → landed (exact edit: the `| **SB-S2 — Evolution loop** |` row → add the `✅ *landed*` marker, matching SB-S0/S1 row style); persist brief + plan. **Commit; confirm before push (PUBLIC `open/`), window; STATE.md gitignored.** Conditional 0.5.2 release per Q2 (tag + catalog via `release-plugin.mjs`).
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## 7. Scope fence (echo — SB-S2 does NOT)
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No journal-capture · no new agent (session extracts) · no `profile.md` reader (S3) · no supersede (keep-both only; S3) · no cross-silo id threading (S3) · no `content-history.md` retirement · no AI at session-start (deterministic nudge only) · no auto-apply (only `--apply --confirm` writes profile.md) · no new hook `.mjs` (edit existing session-start.mjs) · no new seam function · no connector (S4) · no GUI.
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## 8. Known limits / deferred (honest)
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- **The loop's VALUE depends on the session's candidate extraction** — the engine guarantees only the mechanics (threshold/conflict/decay/provenance-gate). Garbage candidates → a garbage diff (but the operator gate + the candidate-schema validation catch shape errors, not quality). Documented in `consolidation-loop.md`.
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- **profile.md has no reader until S3** — S2 evolves an artifact nothing consumes yet; the value is deferred compounding. Stated honestly.
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- **Evidence inflates only on genuinely-new candidates** — `--gather` is delta-gated (published since `last_run`), so a re-run after `--apply` surfaces nothing; the engine itself would bump again given the same candidate, but the loop never re-feeds one. Documented.
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- **No supersede / no stale-fact demotion in S2** — conflicts keep both; stale facts are flagged, never auto-removed (operator/ S3).
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- **Session-start nudge is new-published-count only** — no per-fact staleness at session-start (no zero-dep profile parser).
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## 9. Risks
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- **Duplicate-id corruption (was plan-critic B1) — CLOSED:** primary ids (`mintEntityId(key)`) and conflict-alt ids (`mintContentId('observed-alt:'+key+'::'+value+'::'+date)`) are byte-distinct, so no two facts share an id; the bump/promote target is unambiguous and `parseProfile`/`serializeProfile` stays well-formed. Pinned by SC1e (distinct ids) + SC3 (round-trip) + SC4 (idempotency).
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- **`--gather` data source (was plan-critic B2) — CLOSED:** gather reads the published files directly (`parsePublishedRecord` → body), not `listPublished()` (which lacks body/`captured_at`); filtered by `published_date > last_run`.
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- **Hook tests not gate-run (was plan-critic B3):** `scripts/test-runner.sh` runs NO hook test, so SC6 is verified by an explicit `node --test hooks/scripts/__tests__/` step (the whole suite), NOT the structure gate. SC7 reworded; no false "hook tests pass at the gate" claim. **Flagged (not done):** wiring the hook suite into test-runner.sh is a separate hardening opportunity.
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- **Engine rule ambiguity (conflict vs bump):** deterministic value-equality decides bump-vs-conflict; keep-both is the safe default; each rule pinned by its own SC1x test before the CLI wires it.
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- **Sidecar reachability (was the brief-review blocker) — CLOSED:** both `--apply` (dataRoot) and session-start (getDataRoot) resolve the SAME data root → the sidecar closes the loop; SC6 sets HOME + data root to separate temp dirs (the trends-test pattern) to prove it.
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- **Zero-dep hook discipline:** no tsx, no profile parse, bounded readdir, `\\n` idiom; scaffold-ensure runs unconditionally (fresh-install path); SC6 asserts valid JSON output + the nudge rendering.
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- **Gate floors:** BRAIN floor = actual post-impl count (assert suite RAN, not warn-skipped — step 1 fail-loud on missing tsx); `ASSERT_BASELINE_FLOOR` +0 (no new test-runner section). Confirm `TOTAL_CHECKS` unchanged at step 8.
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- **Pathguard:** session-start.mjs is an existing file → Edit (safe). The new hook TEST `.mjs` under `hooks/scripts/__tests__/` is authored via **Bash-heredoc** — safe whether or not the active Category-6 guard matches `__tests__/` (the verified llm-security `.mjs` guard matches `hooks/scripts/.*\.mjs`; heredoc sidesteps it regardless).
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