Phase 0: lock platform contract, naming convention, and style enforcement

Establishes the framework's foundation as a multi-site adoptable platform.

ADRs (migrations/adr/):
- ADR-001 (ACCEPTED): Asset is the platform contract; Machine retires.
  Three relationship types (partof, controls, connectedto) with free-text
  label, position-resolution chain (asset > related > location),
  hierarchical locations, sibling-bay propagation.
- ADR-002 (ACCEPTED): Plugin contract semver via __contract_version__.
- ADR-003 (ACCEPTED): Hybrid plugin distribution (in-tree bundled +
  filesystem-based external).
- ADR-004 (ACCEPTED): Per-site instances, not multi-tenant.
- ADR-005 (ACCEPTED): Equipment plugin (manufacturing) split from
  measuringtools plugin (metrology). Subtype-table pattern for protocol
  data (FOCAS, CLM, MTConnect).
- ADR-006 (ACCEPTED): Plugin collector contract via get_collector_schema
  hook with API-key auth and identity-based upsert.

Naming convention v1 (CONTRIBUTING.md):
- DB tables/columns: lowercase concatenated, no underscores or dashes
- DB-mirrored Python/JS variables match column names exactly; pure code
  follows host-language convention (PEP 8 / camelCase)
- Closed acronym allowlist (universal + shop-floor domain), banned
  shorthand list with suffix exception (printers_bp etc allowed)
- Plain ASCII everywhere: chat, docs, comments, string literals

Style enforcement (scripts/check-naming-and-style.sh):
- Pre-commit-runnable check script: non-ASCII, banned shorthand,
  snake_case DB names, snake_case API params in frontend
- Fixes 14 violations across 11 files (Unicode arrows, snake_case
  params, ctx -> canvasContext, res -> response, req -> request_obj)

Project state (CLAUDE.md, README.md, frontend/CLAUDE.md):
- De-staled CLAUDE.md to reflect actual current state
- README unifies DB story (MySQL canonical, SQLite test-only)
- frontend/CLAUDE.md points at root convention

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

frontend/src/components/AssetRelationships.vue

@@ -95,8 +95,8 @@
           <div class="form-group">
             <label>Direction</label>
             <select v-model="newRel.direction" class="form-control">
-              <option value="outgoing">This asset → Target asset</option>
-              <option value="incoming">Source asset → This asset</option>
+              <option value="outgoing">This asset -> Target asset</option>
+              <option value="incoming">Source asset -> This asset</option>
             </select>
           </div>
 

frontend/src/components/EmployeeSearch.vue

@@ -86,8 +86,8 @@ async function onSearch() {
 
   searchTimeout = setTimeout(async () => {
     try {
-      const res = await employeesApi.search(query)
-      results.value = res.data.data || []
+      const response = await employeesApi.search(query)
+      results.value = response.data.data || []
     } catch (err) {
       console.error('Employee search error:', err)
       results.value = []