Tight pass on round-4 answers (single commit per head's request):
- cable_types is GLOBAL — drop project_id, UNIQUE(name). Migration 001
seeds the 5 defaults once; POST /api/projects no longer seeds them.
API moves to top-level /api/cable-types. Renaming/recolouring affects
every project. CASCADE from projects does not touch cable_types.
- devices: UNIQUE (project_id, name) added.
- projects: drawing_name defaults to "<name>.excalidraw" server-side
on POST when omitted; editable via PATCH.
- DELETE /api/projects/:pid requires ?confirm=<name>; server checks
name match, returns 400 if missing or mismatched.
- io_markers: no type_id (Power-by-convention, UI soft-warn). Confirmed
v0 stance.
- Bundles ignored on export — carries over from v2.
- §0 changelog rewritten as "what changed in v3 / what carried over".
- §2 schema rewritten; FK-shape paragraph updated to call out the one
global table.
- §3 endpoints: cable-types moved to top level; POST/DELETE projects
show new defaults + guardrail semantics.
- §4 export table notes cable_types pulled from global.
- §7 "edit cable type" flow gains the cross-project-effect banner +
ON DELETE RESTRICT inline-error UX.
- §8 slice 1 rewritten: no per-project seeding; legend reads global.
- §9 all six v2 questions marked resolved with the v3 answer per item.
- Trailer changes to "DESIGN v3 READY — coder shift gated".
- CLAUDE.md mirrors: global cable_types, device UNIQUE per project,
drawing_name default, delete guardrail.
mAi
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