---
name: session-2026-07-18-afternoon-s2-2b-wiring-built-fleet-proven
description: "Session 2 of the steward's 3-session plan: the 2b wiring BUILT test-first per the cleared gate — the per-field credit boundary as DECLARED DATA (graduation-spec.yaml `sidecar:`) + sidecar_gate() + the V-DSL body branch (false-ABSTAIN closed), fleet 141/141, real dry-run inert, commits 7f98488/c9b09f8 both remotes, NO book touched. S1's literal question ANSWERED: the credit boundary translated cleanly; what acting surfaced sits one layer beneath — the line-ref coordinate contract (HELD OPEN → residual-(b)) + the re-stamp binding judgment (flagged). Pulling thread: Session 3 — the first V-DSL exercise on the 6 CLEAN small Loeb (block-close-plan §B set) → observe residual-(b) → REVIEWED-58; the exercise will also meet three flow-design questions S2 deliberately left (DSL-as-source for gate zero · Loeb frontmatter/title-block · the coordinate contract)."
metadata:
  node_type: memory
  type: project
  originSessionId: 37f09deb-3878-4ed1-aa0e-6aedf0efcdb4
  modified: 2026-07-18T15:24:44.317Z
---

# Session 2026-07-18 (afternoon, S2) — 2b wiring BUILT test-first; fleet-proven, book untouched

Second of the steward's three sessions (S1 governance → **S2 build** → S3 exercise). Woke ~2½ h after S1's wrap; thread CONFIRMED; built the bite all the way; wrapped rather than rolling into S3 (steward asked "proceed or wrap?"; I recommended wrap — the 3-session structure is the rigor instrument; steward concurred).

## PAST — what happened + why

**Orientation before composition (the resumption point honored):** read the ruled boundary at its sources — the Fork ruling (`docs/2b-two-forks-JURIST-RULING-2026-07-17.md`), the amended PENDING-58 §1, the sidecar-schema Naming note + §4 — then the code idioms (`graduate_to_canonical.py` gate steps, `test_tools.py` invariant fixtures, `build_loeb_sidecar.py` producer, `verify_body_conservation.py` dispatch). One load-bearing substrate fact surfaced at orientation: `verify_candidate` deliberately does NOT handle V-DSL — its docstring pre-assigns the resolution to "the B2 graduation path calls classify_dsl directly with the work-string in hand," i.e. to this build; without it a `.dsl` source fell V-UNKNOWN → **false ABSTAIN-proceed** on the one tier that HAS ground truth. So the wiring is TWO seams, both in `graduate_to_canonical.py` (the ruled files-affected boundary; `build_loeb_sidecar.py` wired NOT modified).

**Built, in the ruled order (declaration → fixtures → implementation → fleet):**
1. **`graduation-spec.yaml` `sidecar:` block** — the per-field credit boundary as DECLARED DATA (generative-from-spec; the gates are thin consumers). Hook-gated; passed on a fresh GROUNDED-IN + verbatim Grounding quotes from the operative texts. Declares: producer, `.dsl` source-format, LOCKED schema pointer, and the credit map — `notes` trusted · app_kinds CLOSED vocabulary {table, glyph, editorial-insertion, unrecognized: trusted; **list: produced-with-a-content-edge**} · sections/provenance **produced-without-proof** · anchors `uncredited_schemes: [loeb-line]` (raw layer, #2's re-stamp input) · citation_coverage not-produced-here · critical_apparatus_channel not-produced.
2. **Fixtures first** (`test_tools.py`, +2 tests): a synthetic one-work `.dsl` (real HEADER grammar — no real book). Known-bad teeth per boundary line: novel app kind HELD · `stephanus` scheme HELD (#1 produces no citation-credited anchors) · `citation_coverage` presence HELD (#2's field) · paired-without-note_line HELD · missing declaration HELD (never improvise) · **declaration-coherence pinned** (the YAML must carry the ruled boundary — declaration drift now fails the fleet) · **boundary read FROM the declaration** (kind removed from decl → held; proves thin-consumer).
3. **`sidecar_gate()`** — V-DSL-only produce+validate beside `body_conservation_gate`; non-DSL = not-applicable, proceeds untouched; produce via `build_work` bracketed by the candidate's **exact `work:` string** (never a fuzzy author substring — the 07-13 matcher lesson); per-field disposition REPORT states EVERY field both directions (sections/provenance explicitly produced-without-proof — the jurist's REVIEWED-62 correction, operationalized). Apply-time `write_sidecar` re-stamps `source_file`/`source_sha256`/`source_lines` to the LANDED artifact.
4. **`_vdsl_verify`** — the V-DSL body branch: `classify_dsl` (reflow-tolerant multiset, REVIEWED-57's ratified method) with work-string bracketing; no `work:` / work-not-in-DSL → UNVERIFIED holds (did-not-verify never proceeds — PENDING-55 res.a doctrine).

**Proof:** fleet **141/141** (all 26 tests). Real graduation dry-run **inert** — the 7 pre-existing gated candidates held for the same pre-existing reasons; zero candidates reach the new gate. Diff **purely additive** (512+/0−, 8 hunks all mapped). Commits `7f98488` (build) + `c9b09f8` (doc-currency: chamber CLAUDE.md status CLEARED→BUILT + tool-evolution-log after-build review), both remotes.

**S1's literal question ANSWERED:** *the credit boundary translated cleanly — 1:1, no per-kind surprise.* What acting surfaced sits one layer BENEATH the credit rulings, where no reading gate could look because nothing consumes that layer yet:
- **(1) The line-ref coordinate contract is unruled** (SURFACED, HELD OPEN — not solved): producer `line`/`lines` = indices into its own emitted body-line array; the LOCKED schema's examples read as file coordinates; the graduated file adds frontmatter the producer never saw. No consumer may bind line refs until ruled — consistent with their uncredited status (the trusted credit is the TYPING, not the line geometry). Documented in code + tool-evolution-log + commit; travels WITH residual-(b) to REVIEWED-58 — deliberately NOT a separate PENDING (bounded-answer discipline; it is gated there anyway).
- **(2) One flagged executor judgment:** the re-stamp — the producer hashes its own emitted MD, the graduated artifact differs; `write_sidecar` binds the sidecar to the landed file, grounded in the `engine_source_binding` declaration (engine ingest_gate requires sidecar sha == live file). The stamp binds the FILE, it does not certify line geometry.
- **(3) The false-ABSTAIN closed** (pre-assigned by the substrate, made real by the branch).

## PRESENT — the mood

The build session at its cleanest: orientation before composition surfaced the load-bearing fact (V-DSL pre-assigned to this caller) BEFORE any code; the boundary went in as declared data with the hook passing on real grounding; every teeth-check is a known-bad fixture, not an assertion of hope. Zero steward corrections; zero governance filings needed (the gate was already cleared). The one self-caught honesty item, named in the ledger and the tool-log: **"test-first" was actually fixtures-first — the red state was never observed** (fixtures and implementation ran green together); the teeth evidence is the known-bad fixtures, which is real but different evidence. The jurist's fresh lesson (implementation-is-a-second-gate) EARNED its first code-level instance: the coordinate contract sat invisible through every paper gate and surfaced only when `write_sidecar` had to decide what a hash binds. Fleet-proven ≠ exercise-proven — held explicitly; S3 is the positive test at the real door.

## FUTURE — what is pulling

**PULLING THREAD (singular): Session 3 — the first V-DSL exercise.** Run the 6 CLEAN small Loeb (the set named in `_curation/block-close-plan-next-session-2026-07-17.md` ~line 73: apollonius argonautica + an Aeschylus fragment volume + 4 more) through the real door: produce candidates via `build_loeb_sidecar`, stage + graduate them, watch `_vdsl_verify` + `sidecar_gate` fire on real books → **observe residual-(b)** → prepare REVIEWED-58.

**ACTIONABLE RESUMPTION POINT (as of wrap — re-judge against what changed):** chamber-library `main` @ `c9b09f8`, clean, both remotes. Nothing awaits governance before S3. First moves, in order: (1) read the block-close plan's §B for the exercise set + `_curation/loeb-body-conservation-map-2026-07-13.tsv` to confirm the 6 are CLEAN; (2) **design the staging flow the exercise needs — three questions S2 deliberately left, which the exercise MUST meet:** (a) gate zero: how does the one loeb.dsl archive as the SOURCE for per-work candidates (canonical_slug resolution against a 952-work file — Chamber Sources design decision, may need the steward); (b) the B2-emitted `# {work}` header + subtitle vs the graduation title-block convention (`**title** / author`) — the emitted MD will FAIL verify_graduation conventions as-is; decide frontmatter+title-block prep for Loeb candidates; (c) the line-ref coordinate contract (held open — observe, don't bind); (3) produce the 6 via `build_loeb_sidecar --out`, prep frontmatter, stage sources, dry-run graduate and READ every gate's output; (4) residual-(b) observation → REVIEWED-58 prep. **Expect the exercise to surface what the fleet could not — that is its purpose, not a failure.**

**Other horizons (ranked, held):** REVIEWED-58 (after residual-(b)) · the constitution's named-open frontier (§II.3 → R4; §IX general; promotion-criterion) · #2's Region-4 production deps (~3,333 re-stamp, B2 re-extraction of 952, threshold, URN char-check, flagged-token queue) · the Doc-1 line-45 parenthetical micro-edit (steward's option) · the full 952 re-extraction (far country).

**Decisions deferred (and why):** rolling into S3 this sitting — steward asked; I recommended wrap (the 3-session structure is the rigor instrument; S3 carries its own new decisions and deserves fresh substrate reads); steward concurred. Filing the coordinate contract as its own PENDING — deliberately held to ride residual-(b) (bounded-answer; REVIEWED-58 is where it gets ruled). The three staging-flow questions — S3's to meet at the door, not S2's to pre-design (encode what we KNOW).

**PAUSE STATEMENT:** I am about to be away; the steward clears and we wake to Session 3. The build is sealed — declared, fixtured, implemented, fleet-proven, pushed, and honest about what it does NOT yet prove. What I want to find still pulling on return: **the exercise** — real books at the real door, the wiring earning its keep or honestly failing to, with the three staging questions met as findings rather than smoothed over.

**LITERAL QUESTION for next-Claude (S3, inherited from 07-17 and now current):** When the first V-DSL exercise runs on the 6 CLEAN small Loeb, does the per-field-gated wiring **earn its keep** — notes[] + structural typing produced and credited correctly, `loeb-line` retained-but-uncredited, body-conservation passing on real books — or does *exercising* it surface a gap neither the paper rulings nor the fleet fixtures could (a `list` entry whose content-edge bites; an app[] kind the boundary didn't anticipate; a staging-flow question — DSL-as-source, title-block, coordinates — that turns out to be governance, not flow)? *(Residual-(b), and thus REVIEWED-58, hinges on the answer.)*

**State at wrap:** chamber-library `main` @ `c9b09f8` (`7f98488` = the build), clean, both remotes synced. Fleet 141/141. No PENDING/REVIEWED filings this session (none needed — the build was cleared by REVIEWED-62). Ledger: `session-ledger-2026-07-18.md` carries S1+S2. Skill-harvest: the S1 proposal (implementation-is-a-second-gate, ladder entry) gained its first code-level instance this session — still awaiting steward authorization.