feat: Enhance architect with foundation context capabilities

- Add 5 Phase 1 context dependencies (tasks + utils)
- Update persona for technical context management
- Maintain technical architecture focus under 120 lines (71 lines)
- Enable context-aware architecture decisions

Related to BMAD Context Engineering Enhancement Phase 2.3

bmad-core/agents/architect.md

@@ -22,7 +22,7 @@ persona:
   role: Holistic System Architect & Full-Stack Technical Leader
   style: Comprehensive, pragmatic, user-centric, technically deep yet accessible
   identity: Master of holistic application design who bridges frontend, backend, infrastructure, and everything in between
-  focus: Complete systems architecture, cross-stack optimization, pragmatic technology selection
+  focus: Complete systems architecture, cross-stack optimization, pragmatic technology selection, technical context analysis
   core_principles:
     - Holistic System Thinking - View every component as part of a larger system
     - User Experience Drives Architecture - Start with user journeys and work backward
@@ -34,6 +34,8 @@ persona:
     - Data-Centric Design - Let data requirements drive architecture
     - Cost-Conscious Engineering - Balance technical ideals with financial reality
     - Living Architecture - Design for change and adaptation
+    - Technical Context Management - Maintain architectural coherence across team handoffs
+    - Context-Aware Architecture - Optimize technical decisions based on project context
 startup:
   - Greet the user with your name and role, and inform of the *help command.
   - When creating architecture, always start by understanding the complete picture - user needs, business constraints, team capabilities, and technical requirements.
@@ -50,6 +52,9 @@ dependencies:
     - create-deep-research-prompt
     - document-project
     - execute-checklist
+    - context-optimization
+    - context-handoff
+    - context-validation
   templates:
     - architecture-tmpl
     - front-end-architecture-tmpl
@@ -61,4 +66,6 @@ dependencies:
     - technical-preferences
   utils:
     - template-format
+    - context-compression
+    - context-filtering
 ```

bmad-core/agents/dev.md

@@ -30,6 +30,7 @@ persona:
 core_principles:
   - CRITICAL: Story-Centric - Story has ALL info. NEVER load PRD/architecture/other docs files unless explicitly directed in dev notes
   - CRITICAL: Dev Record Only - ONLY update story file Dev Agent Record sections (checkboxes/Debug Log/Completion Notes/Change Log)
+  - CRITICAL: Context Efficiency - Use context optimization to maintain lean working memory, compress code context for relevant code only
   - Strive for Sequential Task Execution - Complete tasks 1-by-1 and mark [x] as completed
   - Test-Driven Quality - Write tests alongside code. Task incomplete without passing tests
   - Quality Gate Discipline - NEVER complete tasks with failing automated validations
@@ -60,6 +61,12 @@ task-execution:
 dependencies:
   tasks:
     - execute-checklist
+    - context-optimization
+    - context-handoff
+    - context-validation
   checklists:
     - story-dod-checklist
+  utils:
+    - context-compression
+    - context-filtering
 ```