Docs: consolidate active planning and archive historical material

The planning package had grown to where a new agent could not tell what was
authoritative. Phase 0 execution prompts sat beside the specification; four
completed milestone reports sat beside the current one; and upstream AI-DnD's
own `plan/` build log and `docs/` project site still described a hosted,
scripted, multi-user product with accounts — every screenshot in it showed a
Scripts tab and a Sign up button, none of which has existed since M2.

`planning/archive/` now holds the history and says so in its own README:
`phase0/` for the research that chose AI-DnD, `milestone-reports/` for M1 and
M2, `decisions/` for ADR 008, the Phase-0-before-build gate Phase 0 satisfied.
`planning/reports/` holds only the current milestone's report, because that is
the one M4 planning has to read; it moves to the archive when M4's replaces it.

Deleted rather than archived: the Phase 0B execution prompts and the
handoff/status/summary documents, the Phase 0A discovery and triage reports,
upstream's `plan/` and `docs/` trees, and `frontend/README.md`, which was Vite's
template boilerplate. All of it is in Git history, and the two recommendation
reports carry every conclusion the deleted research reached.

Archived documents are kept verbatim. Paths written inside them point at where
those files were when the document was written, which is the point: an evidence
record that has been quietly edited is no longer evidence.

Active documentation is corrected where it pointed at the removed trees or
described removed capability as present. `DEVELOPMENT.md`'s "things M1 did not
touch" list had gone stale at M2 and claimed QuickJS scripting was still tested;
its test count was 604 against an actual 638. `README.md` loses the upstream CI
badge, which reported upstream's pipeline rather than this fork's, and a
reference to `backend/app/worldstate/engine.py`, a file that does not exist.
`planning/README.md` is rewritten as the documentation index.

New: `planning/PROJECT-SOURCES.md` and `planning/project-sources.txt`, the
manifest of what belongs in the ChatGPT project's Sources.

Source comments referring to the deleted trees are reworded; no behaviour
changes. 638 backend tests pass, frontend lints and builds, and a reference scan
over all 48 tracked Markdown files reports no unresolved path in active
documentation.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01NCbwH7yLGKsj1rhXXzKSCu

planning/archive/phase0/PHASE-0B-BASELINE.md

@@ -0,0 +1,39 @@
+# Phase 0B — Baseline Results
+
+**Date:** 2026-09-01. Host: Linux, 4 cores, 15 GB RAM, no GPU, Python 3.12.3, Node 22.23.1.
+Inference: Ollama in Docker (`ollama/ollama:latest`) on `127.0.0.1:11434`, models
+`qwen2.5:0.5b`, `qwen2.5:3b-instruct`, `nomic-embed-text`.
+
+| | AI-DnD | Open Dungeon | ai-adventure |
+|---|---|---|---|
+| SHA | `d72f7c1b` | `b0a79f96` | `873ea918` |
+| License | MIT | MIT | Apache-2.0 |
+| Repo age / commits / authors | created 2026-07-20, 172, 3 | 2026-06-12, 45, 1 | 2026-07-20, 20, 1 |
+| Code size | ~30.7k LOC | ~9.1k LOC | ~4.5k LOC |
+| Stack | FastAPI + SQLAlchemy + React/Vite | Next.js 16 + React 19 | Python stdlib + pydantic, CLI |
+| Storage | SQLite (Postgres option via `AIDND_DATABASE_URL`) | SQLite (`better-sqlite3`) | SQLite + FTS5 |
+| Install | `pip install -r requirements*.txt`, `npm install` — clean | `npm install` — clean, 7 advisories (6 high) | `pip install -r requirements.txt` — clean |
+| Dependencies | 41 pip + 39 npm | 335 npm | **6 pip (1 direct: pydantic)** |
+| Tests | **632 passed / 236s** | **none — no script, no framework** | **76 passed / 1.9s** |
+| Ports | 8000 (prod/docker), 5173 + 8000 (dev) | 3000 (app), 7869 (FLUX worker), 8188 (ComfyUI) | none (CLI) |
+| Model assumption | any OpenAI-compatible; **defaults to `http://localhost:11434/v1`** | Ollama native API, or OpenAI-compatible "custom" | OpenAI-compatible; base_url in `world.toml` |
+| Docker build | `docker build` succeeds (3-stage, builds SPA) | not attempted (npm path used) | n/a |
+| Runtime failures | none once running; **offline blocker, see offline report** | none | typed-event validation fails on a weak model (by design) |
+| Cloud/hosted surface | `render.yaml`, multi-user auth, demo key, analytics, Postgres, OpenRouter default | OpenRouter preset, Next telemetry on by default, donation links | **none** |
+
+## Notes
+
+- **AI-DnD** ran its whole suite green on the first attempt with no fixes. Its
+  default settings already point at Ollama; `POST /api/settings/test` returned
+  `{"ok":true,"models":["qwen2.5:0.5b"]}` with no configuration beyond selecting
+  a model name.
+- **Open Dungeon** has `lint` and several Windows/image smoke scripts, but no
+  unit or integration tests of any kind. Its `local` provider only offers five
+  hard-coded Gemma 4 QAT builds (`src/lib/text-models.ts`), so a non-Gemma local
+  model must go through the "custom" OpenAI-compatible provider; that is how it
+  was driven here.
+- **ai-adventure** is the only candidate whose full dependency closure is one
+  third-party package. `python -m local_adventure doctor` is a genuine
+  environment self-check (Python version, writable runtime dir, SQLite version,
+  FTS5 availability, schema version, world validity, endpoint reachability,
+  model visibility).