v1.1 WP-B.2: independent long-term memory retention

Corrects the memory mechanisms WP-B.1 diagnosed, one at a time, each
verified before the next. Accepted by the owner with a documented
reference-model limitation. No schema, bundle format, setting default,
lineage, authority or protocol-cleanup change.

- B2.1 ranking: the retrieval query is the player's input plus a bounded
  scene context (state scene + end of the newest narration), embedded in
  one call. final = semantic (0.6 input / 0.4 context) + 0.15 x lexical,
  where lexical is a rarity-weighted share of the input's words, computed
  per turn over the candidates with no index. Scores and the query are
  recorded per used memory; pins and redundancy suppression unchanged.
- B2.2 coverage-aware eviction (memorybank.eviction_order): the earliest
  and newest memories are kept, the smallest coverage hole goes first,
  least-recently-used breaks ties and remains the fallback. Bounded; pins
  never evicted; frozen-bank protection kept; reads no text or vectors.
- B2.3 bounded memory creation: a block longer than 2,000 tokens is shown
  to the summariser as head + tail with an omission marker, inside the
  same budget; shorter blocks unchanged; the marker is never stored.
- The memory summariser prompt is unchanged from v1.0.0. A B2.4 prompt
  experiment was measured on the reference model, showed no reliable
  improvement for the target failure (0/5 under both prompts, with new
  "Memory:"-prefix, second-person and length regressions), and was
  reverted. memorybank.memory_user_prompt is kept as a behaviour-neutral
  helper.
- tools/memory_fidelity.py (diagnostic only): genre-neutral fixtures plus
  the failed block, a deterministic fidelity checker, and a real-model
  shipped-vs-experiment measurement.
- tools/memory_diagnostic.py: ranking replica uses production scoring;
  ranking_crowded, ranking_context_dependent and independent_full
  fixtures; per-turn isolation and provenance.
- tests: B.1's two strict xfails are now ordinary passes; ranking,
  eviction and excerpt tests; summariser acceptance tests kept apart from
  diagnostic-measurement tests.
- DEVELOPMENT.md: the GPU-host kernel/Ollama watch used `-k -u ollama`,
  which matches nothing; now the OR form.
- docs: CONTEXT-AND-MEMORY 15/18/20/21 as shipped, V1.1-PLAN (status and
  release criteria 12-13), planning README, VERSION v4.3,
  reports/v1.1/V1.1-WP-B2-REPORT.md.

Deterministic independent-memory recovery: PASS (independent_full fails
on v1.0.0 at creation and returns recovered_through_memory_independent
here). Reference-model independent recovery: FAILED on the
precondition-valid attempt, at memory creation: the summariser omitted a
player-established fact from a block it received whole. Accepted as a
documented v1.1 residual and carried into the release gate.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VvegagkhuCZoFPdv4M1egY

planning/VERSION.md

@@ -2,7 +2,29 @@
 
 - **Package:** Adventure Storyteller Planning Package v4.2
 - **Revision date:** 2026-09-14
-- **Status:** **v1.0.0 released on 2026-09-14**: the signed tag `v1.0.0` and `main` both point at the signed release commit `432f041`. Milestones M1-M11 complete and closed; all 82 REQUIRED FOR V1 tests pass, with H09 not applicable. **v1.1 is in progress** on `v1.1-development` (`V1.1-PLAN.md`): **WP-A1 and WP-A2 are implemented and staged for owner review.** No other work package has started, and no v1.1 version or tag exists.
+- **Status:** **v1.0.0 released on 2026-09-14**: the signed tag `v1.0.0` and `main` both point at the signed release commit `432f041`. Milestones M1-M11 complete and closed; all 82 REQUIRED FOR V1 tests pass, with H09 not applicable. **v1.1 is in progress** on `v1.1-development` (`V1.1-PLAN.md`): WP-A1 and WP-A2 are committed (`d63804f`) and WP-B.1 is committed (`beb17ad`). **WP-B.2 is complete and staged for the owner's signed commit, accepted with a documented real-model limitation: B2.1 ranking, B2.2 eviction and B2.3 excerpt creation ship; deterministic independent recovery passes; the reference model failed at memory creation on the precondition-valid attempt, and the B2.4 prompt experiment was rejected and reverted** (`reports/v1.1/V1.1-WP-B2-REPORT.md` §S, §T). WP-C, WP-D and WP-E have not started, and no v1.1 version or tag exists.
+
+## v4.3 — WP-B.2 independent memory retention, accepted with a documented limitation (2026-09-15)
+
+WP-B.1's diagnostic (`beb17ad`) placed three memory deficiencies; WP-B.2 corrects
+exactly those, one at a time, each verified before the next. No requirement or
+acceptance test changed, and no schema, bundle format or setting default
+changed. Evidence and the WP-B decision are in
+`reports/v1.1/V1.1-WP-B2-REPORT.md`.
+
+| Document | Change | Kind |
+| --- | --- | --- |
+| `CONTEXT-AND-MEMORY.md` §15 | **As implemented (v1.1 WP-B.2)**: a block longer than 2,000 tokens is shown to the summariser as its opening and its end with an omission marker, inside the same budget; a block that fits is unchanged; the marker is never stored. | as-implemented record |
+| `CONTEXT-AND-MEMORY.md` §18 | **As implemented**: the retrieval query is the player's input plus a bounded scene context, recorded per turn. | as-implemented record |
+| `CONTEXT-AND-MEMORY.md` §20 | **As implemented**: `final = semantic + 0.15 × lexical`, the rarity-weighted lexical term over the input, the sweep that chose the weight, pins and ties. | as-implemented record |
+| `CONTEXT-AND-MEMORY.md` §15 | **As implemented (v1.1)**: the memory prompt is unchanged from v1.0.0, and the accepted limitation: the reference summariser can omit or misattribute a fact from a block it was given whole. | as-implemented record |
+| `DEVELOPMENT.md` | The GPU-host kernel/Ollama watch command corrected: `-k -u ollama` matched nothing; the OR form records both. | developer docs |
+| `CONTEXT-AND-MEMORY.md` §21 | **As implemented**: selection unchanged in shape; eviction ordered by coverage first (boundaries kept, smallest hole first), recency second, v1.0.0 order as fallback. | as-implemented record |
+| `V1.1-PLAN.md` | Status: WP-B accepted with a documented real-model limitation. §11 release criteria 12 and 13: the v1.1 release report must state the deterministic PASS and reference-model FAIL at memory creation, and list the carried residuals. | status, release gate |
+| `planning/README.md` | Current state. | index |
+| `reports/v1.1/V1.1-WP-B2-REPORT.md` | **New.** B2.1-B2.3 designs and evidence, full deterministic acceptance, real-model attempts, the rejected B2.4 prompt experiment, compatibility, offline, and the WP-B disposition. | work-package report |
+
+**Requirement changes: zero.**
 
 ## v4.2 — WP-A1 and WP-A2 implemented (2026-09-14)