feat(military): USPTO PatentsView defense/dual-use patent filing seeder (#2047) (#2091)

* feat(military): USPTO PatentsView defense/dual-use patent seeder (#2047)

* fix(military): correct PatentsView API field names, sort param, and total semantics

- Use nested dot-notation field names required by PatentsView v1 API:
  assignees.assignee_organization (was flat assignee_organization)
  cpc_at_issue.cpc_subclass_id (was non-existent cpc_subgroup_id)
- Split sort into separate s= param; fix per_page -> size in o= param
  (sort inside o= and per_page are both rejected by PatentsView v1)
- Fix listDefensePatents total to reflect full seeded dataset size,
  not the post-filter count (proto doc: "Total number of filings in
  the seeded dataset")

* feat(defense-patents): add DefensePatentsPanel — R&D Signal frontend

Panel displays weekly USPTO defense/dual-use patent filings from seed.
Five tabs: All | Comms (H04B) | Semiconductors (H01L) | Ammunition (F42B)
| AI (G06N) | Biotech (C12N). Shows assignee, title, CPC tag, date, USPTO link.

Wired into panel-layout.ts and registered as 'defense-patents' in panels.ts.

* fix(defense-patents): TTL 3x interval, recordCount, maxStaleMin 2x, wire into App.ts

- CACHE_TTL: 7d → 21d (3× weekly interval) so key survives missed runs
- recordCount: add (d) => d?.patents?.length ?? 0 so seed logs correct count
- health.js maxStaleMin: 10080 → 20160 (2× 7-day interval per gold standard)
- App.ts: import DefensePatentsPanel, add primeTask (initial load) and
  scheduleRefresh at 24h interval (daily poll for weekly data)

docs/api/MilitaryService.openapi.yaml

@@ -345,6 +345,52 @@ paths:
                         application/json:
                             schema:
                                 $ref: '#/components/schemas/Error'
+    /api/military/v1/list-defense-patents:
+        get:
+            tags:
+                - MilitaryService
+            summary: ListDefensePatents
+            description: ListDefensePatents retrieves recent defense/dual-use patent filings from USPTO PatentsView.
+            operationId: ListDefensePatents
+            parameters:
+                - name: cpc_code
+                  in: query
+                  description: CPC category filter (e.g. "H04B", "F42B"). Empty returns all categories.
+                  required: false
+                  schema:
+                    type: string
+                - name: assignee
+                  in: query
+                  description: Assignee keyword filter (case-insensitive substring match). Empty returns all.
+                  required: false
+                  schema:
+                    type: string
+                - name: limit
+                  in: query
+                  description: Maximum results to return (default 20, max 100).
+                  required: false
+                  schema:
+                    type: integer
+                    format: int32
+            responses:
+                "200":
+                    description: Successful response
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/ListDefensePatentsResponse'
+                "400":
+                    description: Validation error
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/ValidationError'
+                default:
+                    description: Error response
+                    content:
+                        application/json:
+                            schema:
+                                $ref: '#/components/schemas/Error'
 components:
     schemas:
         Error:
@@ -1194,3 +1240,60 @@ components:
                     type: string
                     description: Airline name (e.g. "Emirates"). Empty if no mapping.
             description: WingbitsLiveFlight contains real-time flight position data from the Wingbits ECS network.
+        ListDefensePatentsRequest:
+            type: object
+            properties:
+                cpcCode:
+                    type: string
+                    description: CPC category filter (e.g. "H04B", "F42B"). Empty returns all categories.
+                assignee:
+                    type: string
+                    description: Assignee keyword filter (case-insensitive substring match). Empty returns all.
+                limit:
+                    type: integer
+                    format: int32
+                    description: Maximum results to return (default 20, max 100).
+            description: ListDefensePatentsRequest filters defense/dual-use patent filings.
+        ListDefensePatentsResponse:
+            type: object
+            properties:
+                patents:
+                    type: array
+                    items:
+                        $ref: '#/components/schemas/DefensePatentFiling'
+                total:
+                    type: integer
+                    format: int32
+                    description: Total number of filings in the seeded dataset.
+                fetchedAt:
+                    type: string
+                    description: ISO 8601 timestamp when data was seeded.
+            description: ListDefensePatentsResponse contains recent defense/dual-use patent filings.
+        DefensePatentFiling:
+            type: object
+            properties:
+                patentId:
+                    type: string
+                    description: USPTO patent ID.
+                title:
+                    type: string
+                    description: Patent title.
+                date:
+                    type: string
+                    description: Filing date (YYYY-MM-DD).
+                assignee:
+                    type: string
+                    description: Primary assignee organization name.
+                cpcCode:
+                    type: string
+                    description: CPC classification code (e.g. "H04B", "F42B").
+                cpcDesc:
+                    type: string
+                    description: CPC class description.
+                abstract:
+                    type: string
+                    description: Patent abstract (truncated to 500 chars).
+                url:
+                    type: string
+                    description: USPTO patent URL.
+            description: DefensePatentFiling is a single patent filing from a defense/dual-use organization.