Files
Sam Rolfe 0eb151117e Phase 1a: content schema validator (freeze the schema)
Implements AGENTS.md section 7 front-matter schema as a single-file,
standard-library-only Python validator; no third-party YAML dependency
and no framework. Adds the `make validate` gate, a 20-case fixture set
and docs/content-schema.md.

DoD satisfied:
- make validate runs and exits 0 on an empty/clean content/ tree
  (missing dir and empty dir both exit 0; fixture ok-empty covers it).
- Every violation class has a fixture under test/fixtures/fail-*; each
  exits non-zero with one line per violation (file:line: field: rule).
  `make test` runs all 20 cases: 20/20 pass.
- Dangling artefact reference is fatal (fail-dangling-artefact;
  artefacts[].url must resolve to an existing in-repo L3 stub or asset).
- Unknown front-matter field is fatal (fail-unknown-field), including
  unknown keys nested inside artefacts[]/metrics[].
- docs/content-schema.md committed; states the frozen schema, links to
  AGENTS.md section 7, and records that any later schema change is a
  breaking change requiring Sam's approval.
- Scope respected: no content authored, no rendering, no site code.

Files: Makefile, tools/validate_content.py, test/fixtures/**,
docs/content-schema.md, .gitignore (__pycache__).
2026-10-26 17:26:00 +11:00

475 B

id, area, level, title, claim, confidence, period, tech, metrics, artefacts, public, last_verified, tags
id area level title claim confidence period tech metrics artefacts public last_verified tags
audio edge 2 Distributed Audio Eight synchronised endpoints with music ducking for voice. running 2023-
Snapcast
Mopidy
Spotify
label value
endpoints 8
type label url
doc Architecture note content/edge/l3/audio-architecture.md
type label
image Rack diagram
true 2026-10-20
audio
snapcast

Distributed Audio