Milestone 2: module/model docs (MD, Sphinx RST, PDF) and work log

74 source modules documented with extracted signatures, JSDoc params,
imports, and call graphs. 10 first-class models (PriceRule through
StatusResponse) have their own MD/RST/PDF. Sphinx HTML builds from
docs/sphinx. Per-module PDFs in docs/modules-pdf and docs/models-pdf.

Middleware gates 2–6 and 10 pass on MOCK_VERAE without NATS.

Learned: RST includes are relative to the RST file; keep one PDF per
module; Add Numbers remains the only push required tomorrow.

docs/models/StatusResponse.md

@@ -0,0 +1,27 @@
+# StatusResponse
+
+**Kind:** OpenAPI schema  
+**Defined in:** `docs/00-sources/veraetime-openapi.yaml`
+
+## Fields
+
+| Field | Type | Meaning |
+|-------|------|---------|
+| `id` | `string` | jobId |
+| `status` | `'pending' | 'completed' | 'failed'` | Job state |
+| `error` | `string?` | If failed |
+| `result` | `string?` | Certificate if completed |
+| `completedAt` | `string date-time?` |  |
+| `metadata` | `object?` | blockIndex, timestamp, certificate, block, chain |
+
+## Who constructs it
+
+HTTP 200 JSON
+
+## Who consumes it
+
+`GET /api/status/{jobId}`, `Find Job Status search`
+
+## Related modules
+
+See `docs/modules/` for the functions that take these types as parameters and the values they return.