docs(01): capture phase context

Phase 01: Foundation
- User skipped discussion (infrastructure phase)
- Claude has discretion following research recommendations

.planning/phases/01-foundation/01-CONTEXT.md

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+# Phase 1: Foundation - Context
+
+**Gathered:** 2026-01-29
+**Status:** Ready for planning
+
+<domain>
+## Phase Boundary
+
+Data persistence and project structure are ready for feature development. This phase creates:
+- SQLite database with schema
+- Unified entries table (tasks and thoughts via type field)
+- Repository layer for typed CRUD operations
+- Filesystem storage structure for future images
+- Development server serving a basic page
+
+</domain>
+
+<decisions>
+## Implementation Decisions
+
+### Claude's Discretion
+
+User opted to skip discussion — foundation is infrastructure. Claude has full discretion on:
+
+- **Data model design**: Entry fields, schema structure, migration approach
+- **Project structure**: SvelteKit standard layout, directory organization
+- **Repository pattern**: Interface design, method signatures
+- **Development workflow**: Hot reload, database initialization
+
+**Guiding principles from research:**
+- Use SvelteKit 2.x + Svelte 5 (from STACK.md)
+- Use SQLite with better-sqlite3 + Drizzle ORM (from STACK.md)
+- Unified entries table with type discriminator, not separate tables (from ARCHITECTURE.md)
+- Filesystem storage for images, not database BLOBs (from PITFALLS.md)
+- Repository pattern for testable, database-agnostic business logic (from ARCHITECTURE.md)
+
+</decisions>
+
+<specifics>
+## Specific Ideas
+
+No specific requirements — follow research recommendations and standard patterns.
+
+</specifics>
+
+<deferred>
+## Deferred Ideas
+
+None — discussion skipped for infrastructure phase.
+
+</deferred>
+
+---
+
+*Phase: 01-foundation*
+*Context gathered: 2026-01-29*