docs(02-02): complete markdown renderer plan — REND-01 through REND-10 satisfied

- 02-02-SUMMARY.md: documents render_markdown() pipeline, code block borders, GFM table grid, decisions, deviations
- STATE.md: advance to plan 02 done, update decisions log (02-02 entries), resolve REND Widget trait blocker
- ROADMAP.md: mark 02-02 complete (2/3 plans done for Phase 2)

.planning/STATE.md

@@ -5,33 +5,33 @@
 See: .planning/PROJECT.md (updated 2026-02-28)
 
 **Core value:** Users can connect via SSH and seamlessly browse a vault of linked markdown documents with retro BBS aesthetics
-**Current focus:** Phase 2 in progress — Plan 01 complete (vault core + highlighter foundation)
+**Current focus:** Phase 2 in progress — Plans 01-02 complete (vault core + highlighter + renderer)
 
 ## Current Position
 
 Phase: 2 of 4 (Vault Core and Rendering) — IN PROGRESS
-Plan: 1 of 3 in current phase (plan 01 done)
-Status: Phase 2 Plan 01 complete — Plan 02 (markdown renderer) next
-Last activity: 2026-02-28 — Plan 01 complete (deps, vault.rs, highlighter.rs)
+Plan: 2 of 3 in current phase (plans 01-02 done)
+Status: Phase 2 Plan 02 complete — Plan 03 (app integration + scrolling) next
+Last activity: 2026-02-28 — Plan 02 complete (renderer.rs with full markdown pipeline)
 
-Progress: [████░░░░░░] 33%
+Progress: [█████░░░░░] 50%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 4
-- Average duration: 2.2 min
-- Total execution time: 0.14 hours
+- Total plans completed: 5
+- Average duration: 2.6 min
+- Total execution time: 0.21 hours
 
 **By Phase:**
 
 | Phase | Plans | Total | Avg/Plan |
 |-------|-------|-------|----------|
 | 01-safety-foundation | 3 | 7 min | 2.3 min |
-| 02-vault-core-and-rendering | 1 | 2 min | 2.0 min |
+| 02-vault-core-and-rendering | 2 | 6 min | 3.0 min |
 
 **Recent Trend:**
-- Last 5 plans: 2 min, 3 min, 2 min, 2 min
+- Last 5 plans: 2 min, 3 min, 2 min, 2 min, 4 min
 - Trend: Stable
 
 *Updated after each plan completion*
@@ -56,8 +56,11 @@ Recent decisions affecting current work:
 - 01-03: app_config stored in App struct for Phase 2 access — vault_path accessible inside event loop
 - 01-03: Quit prompt cleared on any non-Ctrl+C key — pressing any key dismisses double-press window
 - 02-01: LinesWithNewlines iterator added to preserve trailing \n for syntect grammar correctness
-- 02-01: mod declarations omitted from main.rs — Plan 03 handles wiring for all Phase 2 modules
+- 02-01: mod declarations added to main.rs during Plan 02 (not Plan 03) — compiler needs them to check renderer.rs
 - 02-01: syntect default-fancy feature uses pure-Rust fancy-regex (avoids Oniguruma C lib)
+- 02-02: Full emit_code_block and emit_table written in Task 1 (not stubs) — avoids throwaway code
+- 02-02: Box width for code blocks capped at terminal width — prevents border overflow on long lines
+- 02-02: Table n_cols derived from max(alignments.len(), max row length) — handles malformed GFM tables
 
 ### Pending Todos
 
@@ -65,12 +68,12 @@ None.
 
 ### Blockers/Concerns
 
-- **REND**: ratatui 0.30 Widget trait confirmed: `impl Widget for &Foo` pattern required (NOT WidgetRef) — Plan 02 must use reference-based impl
+- **REND blocker resolved**: renderer.rs uses no Widget trait at all — `render_markdown()` returns `Vec<Line<'static>>` which Plan 03 passes to `Paragraph::new()`. No custom Widget needed.
 - **NAV**: Path traversal via wiki-links must be addressed in Phase 3 link resolver — canonicalize and prefix-check every resolved path
 - **LIVE**: notify 8.x API must be verified at integration time; watch only current file (not full vault) to avoid inotify exhaustion
 
 ## Session Continuity
 
 Last session: 2026-02-28
-Stopped at: Completed 02-01-PLAN.md — vault.rs and highlighter.rs created, cargo build clean
-Resume file: .planning/phases/02-vault-core-and-rendering/02-02-PLAN.md
+Stopped at: Completed 02-02-PLAN.md — renderer.rs created, cargo check clean
+Resume file: .planning/phases/02-vault-core-and-rendering/02-03-PLAN.md