feat(questions): make brand questions the primary monitoring & template axis

- add /questions/combination-fill endpoint with AI-driven, IP-region-aware matrix fill
- extract ip2region resolver from ops/app into shared/ipregion for cross-service use
- thread question_id filter through dashboard composite, citation summary, and collect-now
- switch template wizard from keyword inputs to brand-question selection (primary + supplemental)
- pass brand_question and supplemental_questions through assist/title/outline prompts
- add AiWaitingModal + 45s client timeout and request_timeout error mapping for long AI flows

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

packages/shared-types/src/index.ts

@@ -472,6 +472,8 @@ export interface TemplateAnalyzeTaskRequest {
   brand_id?: number | null
   brand_name?: string
   website?: string | null
+  brand_question?: string
+  supplemental_questions?: string[]
   input_params?: Record<string, JsonValue>
   existing_keywords?: string[]
   existing_competitors?: TemplateAssistCompetitor[]
@@ -489,6 +491,8 @@ export interface TemplateTitleTaskRequest {
   brand_name?: string
   website?: string | null
   brand_summary?: string | null
+  brand_question?: string
+  supplemental_questions?: string[]
   input_params?: Record<string, JsonValue>
   keywords?: string[]
   competitors?: TemplateAssistCompetitor[]
@@ -506,6 +510,8 @@ export interface TemplateOutlineTaskRequest {
   website?: string | null
   brand_summary?: string | null
   title: string
+  brand_question?: string
+  supplemental_questions?: string[]
   input_params?: Record<string, JsonValue>
   keywords?: string[]
   competitors?: TemplateAssistCompetitor[]
@@ -1278,6 +1284,24 @@ export interface QuestionCombinationRequest {
   max_items?: number
 }
 
+export interface QuestionCombinationFillRequest {
+  region?: string[]
+  prefix?: string[]
+  core?: string[]
+  industry?: string[]
+  suffix?: string[]
+}
+
+export interface QuestionCombinationFillResult {
+  region: string[]
+  prefix: string[]
+  core: string[]
+  industry: string[]
+  suffix: string[]
+  ai_points_charged?: number
+  cache_hit?: boolean
+}
+
 export interface QuestionDistillRequest {
   seed_topic: string
 }