feat(intelligence): analytical framework selector for AI panels (#2380)

* feat(frameworks): add settings section and import modal

- Add Analysis Frameworks group to preferences-content.ts between Intelligence and Media sections
- Per-panel active framework display (read-only, 4 panels)
- Skill library list with built-in badge, Rename and Delete actions for imported frameworks
- Import modal with two tabs: From agentskills.io (fetch + preview) and Paste JSON
- All error cases handled inline: network, domain validation, missing instructions, invalid JSON, duplicate name, instructions too long, rate limit
- Add api/skills/fetch-agentskills.ts edge function (proxy to agentskills.io)
- Add analysis-framework-store.ts (loadFrameworkLibrary, saveImportedFramework, deleteImportedFramework, renameImportedFramework, getActiveFrameworkForPanel)
- Add fw-* CSS classes to main.css matching dark panel aesthetic

* feat(panels): wire analytical framework store into InsightsPanel, CountryDeepDive, DailyMarketBrief, DeductionPanel

- InsightsPanel: append active framework to geoContext in updateFromClient(); subscribe in constructor, unsubscribe in destroy()
- CountryIntelManager: pass framework as query param to fetchCountryIntelBrief(); subscribe to re-open brief on framework change; unsubscribe in destroy()
- DataLoaderManager: add dailyBriefGeneration counter for stale-result guard; pass frameworkAppend to buildDailyMarketBrief(); subscribe to framework changes to force refresh; unsubscribe in destroy()
- daily-market-brief service: add frameworkAppend? field to BuildDailyMarketBriefOptions; append to extendedContext before summarize call
- DeductionPanel: append active framework to geoContext in handleSubmit() before RPC call

* feat(frameworks): add FrameworkSelector UI component

- Create FrameworkSelector component with premium/locked states
- Premium: select dropdown with all framework options, change triggers setActiveFrameworkForPanel
- Locked: disabled select + PRO badge, click calls showGatedCta(FREE_TIER)
- InsightsPanel: adds asterisk note (client-generated analysis hint)
- Wire into InsightsPanel, DailyMarketBriefPanel, DeductionPanel (via this.header)
- Wire into CountryDeepDivePanel header right-side (no Panel base, panel=null)
- Add framework-selector CSS to main.css

* fix(frameworks): make new proto fields optional in generated types

* fix(frameworks): extract firstMsg to satisfy strict null checks in tsconfig.api.json

* fix(docs): add blank lines around lists/headings to pass markdownlint

* fix(frameworks): add required proto string fields to call sites after make generate

* chore(review): add code review todos 041-057 for PR #2380

7 review agents (TypeScript, Security, Architecture, Performance,
Simplicity, Agent-Native, Learnings) identified 17 findings across
5 P1, 8 P2, and 4 P3 categories.

docs/api/IntelligenceService.openapi.yaml

@@ -134,6 +134,12 @@ paths:
                   required: false
                   schema:
                     type: string
+                - name: framework
+                  in: query
+                  description: Optional analytical framework instructions to append to system prompt. Max 2000 chars enforced at handler level.
+                  required: false
+                  schema:
+                    type: string
             responses:
                 "200":
                     description: Successful response
@@ -1009,6 +1015,9 @@ components:
                     type: string
                     pattern: ^[A-Z]{2}$
                     description: ISO 3166-1 alpha-2 country code.
+                framework:
+                    type: string
+                    description: Optional analytical framework instructions to append to system prompt. Max 2000 chars enforced at handler level.
             required:
                 - countryCode
             description: GetCountryIntelBriefRequest specifies which country to generate a brief for.
@@ -1106,6 +1115,9 @@ components:
                     type: string
                 geoContext:
                     type: string
+                framework:
+                    type: string
+                    description: Optional analytical framework instructions.
         DeductSituationResponse:
             type: object
             properties: