scaffold: OpenScribe open-source self-hosted AI voice recorder

Bootstrap of the project (M0). Sets up the monorepo, design docs, hardware BOM,
the open API contract, component skeletons, licensing and CI, following the
Default Workflow SOP.

What changed:
- CLAUDE.md + docs/: copied the Default Workflow so sessions load the SOP.
- state/: PROJECT, ARCHITECTURE, DECISIONS, TODO, NOTES filled in for OpenScribe.
  ARCHITECTURE captures the four-part design (firmware, server, app, case) and the
  three sync paths; DECISIONS records the hardware, AI-stack, storage, app and
  licensing choices; TODO lays out milestones M1-M9.
- hardware/BOM.md: two build options (compact XIAO ESP32-S3 Sense; dev ESP32-S3 +
  I2S mic + SD), wiring/pinout, indicative cost.
- api/openapi.yaml: the completely open API (device + server surfaces), including
  recording list/download/delete and exports (wav/ogg/txt/srt/vtt/md/json).
- firmware/: PlatformIO ESP32-S3 project, two board profiles, pin map, boot scaffold
  with module seams for M1-M4.
- server/: FastAPI skeleton mirroring the OpenAPI, config for self-hosted MinIO,
  faster-whisper and Ollama; stub routes browsable at /docs.
- app/, case/: Flutter app plan; parametric OpenSCAD enclosure.
- Licensing: GPL-3.0 (code), CERN-OHL-S-2.0 (hardware), CC-BY-SA-4.0 (case/docs),
  REUSE-style LICENSES/ with SPDX headers; LICENSING.md explains the split.
- CI: Forgejo Actions workflow builds firmware (both profiles) and lints/imports server.

Why:
- Everything self-hosted and openly licensed per the user's requirements: an open
  API, three sync paths (BLE control, WiFi transfer, independent WiFi upload on
  charge to generic cloud storage), and a full self-hosted transcription+summary stack.

Notes:
- No custom PCB in v1; off-the-shelf modules. Physical verification waits on parts.
- Component code is stubs at M0; features land milestone by milestone, each as its
  own branch/PR per the workflow.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/project-setup.md

@@ -0,0 +1,63 @@
+# Project setup
+
+How to start a new project on the Default Workflow. Do this once, at the beginning of
+a project, before any feature work.
+
+## 1. Create the repository
+
+- Create an empty repo on the forge (git.discworld.casa or wherever the project lives).
+- Clone it, or `git init` locally and add the remote.
+- The trunk branch is `main` unless the forge defaults to `master`; either is fine, be
+  consistent and refer to it as "the trunk" in docs.
+
+## 2. Copy the workflow files in
+
+From this Default-Workflow repo, copy into the new project root:
+
+- `CLAUDE.md` - so every session loads the workflow automatically.
+- `docs/` - the detailed workflow docs (or link to them if you prefer one source of
+  truth; copying keeps the project self contained and offline readable).
+- `templates/*` into `state/` (see next step).
+
+## 3. Create the state directory
+
+The `state/` directory is the project's memory. It replaces chat history. Copy the
+templates and fill in the project specifics:
+
+```
+state/
+  PROJECT.md      - objectives, scope, description, who it is for
+  ARCHITECTURE.md - how the system is built and why
+  DECISIONS.md    - dated log of decisions and their rationale
+  TODO.md         - what is done, in progress, and pending
+  NOTES.md        - working notes, gotchas, environment quirks
+```
+
+Fill in `PROJECT.md` first. It anchors every later session. A session that reads only
+`PROJECT.md`, `TODO.md` and `DECISIONS.md` should understand what the project is and
+what to do next.
+
+## 4. Add a .gitignore
+
+Ignore build artefacts, dependencies, secrets and local scratch. Never commit tokens
+or credentials.
+
+## 5. First commit
+
+Commit the scaffold to the trunk directly (this is bootstrap, not a feature):
+
+```
+git add .
+git commit
+```
+
+Write a full commit message describing what the scaffold contains and why. From here
+on, all work follows the [Workflow](workflow.md): a branch per feature.
+
+## Checklist
+
+- [ ] Repo created and remote set
+- [ ] `CLAUDE.md` and `docs/` present in project root
+- [ ] `state/` created from templates, `PROJECT.md` filled in
+- [ ] `.gitignore` in place, no secrets tracked
+- [ ] Scaffold committed to the trunk