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memory/MEMORY.md

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 - [Local LLM agent stack](local-llm-agent-stack.md) — Hermes Agent + Ollama + Gemma 4 12B on the user's Mac; install gotchas (64K ctx, uv-managed Python 3.11)
 - [NotebookLM CLI setup](notebooklm-cli-setup.md) — notebooklm-py on the Mac; pin --python 3.12 (else silent 0.1.1 downgrade), browser login, launchd auth-refresh keepalive
 - [RPG skill](rpg-skill.md) — house scenario-writing skill at ~/.claude/skills/rpg, shared via claude-config; pull+install before sync, sync.sh after RPG work.
+- [RingBRP project](ringbrp-project.md) — new BRP-engine RPG from the 1984 Chaosium Ringworld set; corpus extracted + setting bible written; ORC/IP question still open.
 - [Contingency 2027](contingency-2027.md) — 27–31 Jan 2027, Hunstanton; repo slaguru666/contingency2027, 10 slots, 8 games incl. the DEAD AIR CoC trilogy.

memory/ringbrp-project.md

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+---
+name: ringbrp-project
+description: "RingBRP — a BRP conversion of the 1984 Chaosium Ringworld RPG, now a working Foundry VTT system"
+metadata: 
+  node_type: memory
+  type: project
+  originSessionId: 710730ff-4590-4412-82b8-d6ae6765d92b
+  modified: 2026-08-07T23:37:53.296Z
+---
+
+Started 7 August 2026. Two locations: design docs in `~/RingBRP/design/`, the working game system
+in `~/FoundryVTT/Data/systems/ringbrp/`.
+
+## Where it stands
+- **Source corpus**: all 9 Ringworld PDFs Docling-extracted to `~/RingBRP/extracted/`.
+- **Setting bible**: `~/RingBRP/RINGWORLD_BIBLE.md`.
+- **Rules spec**: six versions, v0.6 current. Each reviewed adversarially by Codex; full history in
+  `~/RingBRP/design/REVIEW_LOG.md`.
+- **Foundry system**: `ringbrp` v0.6.0, verified running in a live Foundry v14 instance with a
+  world called `ringbrp-slice`. Four pregens, four NPC statblocks, 49 skills, 20 weapons,
+  site/hazard tables and a 7-page GM journal, all in LevelDB compendia.
+
+## Owner's rulings (do not re-litigate)
+- Melee Combat is governed by **STR**; Ranged by **DEX or POW** — never summed. Home-world gravity
+  **determines** which, with no override: light→Reflex/DEX, heavy→Deliberate/POW, normal→choice.
+- **No hit locations.** Final.
+- Hit points are `CON + MAS` (the 1984 value), Major Wound `max(9, ceil(HP/3))`. The floor is
+  deliberate — without it a light-framed character's dagger risk triples.
+
+## Hard-won lessons
+- **Rewards accelerate; they never gate.** Two versions failed because a scenario-critical object
+  sat behind a probability gate (the second time at P=1.7%). Anything on the critical path must be
+  reachable by some route with probability 1.
+- **Derive HP from the weapon damage ladder, not the other way round.** The 1984 damage values are
+  calibrated to a ~26-point pool; halving HP collapses the ladder into one-hit kills.
+- **Foundry LevelDB packs**: the parent document's `items` / `pages` / `results` array must hold
+  **ID strings, not objects**. Writing objects yields a pack that loads with zero embedded
+  documents and no error. This cost real time; the server log message about "undefined embedded
+  records" is the tell.
+
+## Working method that works
+Claude writes the spec, Codex reviews it adversarially via `codex exec`, Claude verifies every
+checkable claim against the source corpus before accepting it. Across six rounds every Codex
+factual claim that was tested held up — but Claude's own recomputation caught four wrong
+probabilities Claude had published, so verify both sides.
+
+Related: [[rpg-skill]]