diff --git a/notepad.md b/notepad.md
index 7bf1a0f..3ede31a 100644
--- a/notepad.md
+++ b/notepad.md
@@ -59,3 +59,85 @@ All tasks execution STARTED: Thu Dec 4 16:52:57 KST 2025
 
 ---
 
+## [2025-12-08 18:56] - Task 1: Remove unused import formatWorkspaceEdit from LSP tools
+
+### DISCOVERED ISSUES
+- None - simple import cleanup task
+
+### IMPLEMENTATION DECISIONS
+- Removed only `formatWorkspaceEdit` from import list at line 17
+- Kept all other imports intact (formatCodeActions, applyWorkspaceEdit, formatApplyResult remain)
+- Verified the function exists in utils.ts:212 but is truly unused in tools.ts
+
+### PROBLEMS FOR NEXT TASKS
+- None identified for remaining tasks
+
+### VERIFICATION RESULTS
+- Ran: `bun run typecheck` → exit 0, no errors
+- Ran: `bun run build` → exit 0, bundled 200 modules
+- Ran: `rg "formatWorkspaceEdit" src/tools/lsp/tools.ts` → no matches (confirmed removal)
+
+### LEARNINGS
+- Convention: This project uses `bun run typecheck` (tsc --noEmit) and `bun run build` for verification
+- The `formatWorkspaceEdit` function still exists in utils.ts - it's exported but just not used in tools.ts
+
+소요 시간: ~2분
+
+---
+
+## [2025-12-08 19:00] - Task 2: Remove unused ThinkingPart interface and fallbackRevertStrategy function
+
+### DISCOVERED ISSUES
+- None - both items were genuinely unused (no callers found)
+
+### IMPLEMENTATION DECISIONS
+- Removed `ThinkingPart` interface (lines 37-40) - defined but never referenced
+- Removed `fallbackRevertStrategy` function (lines 189-244) - defined but never called
+- Added comment explaining removal reason as per task requirements
+- Kept `ThinkingPartType`, `prependThinkingPart`, `stripThinkingParts` - these are different items and ARE used
+
+### PROBLEMS FOR NEXT TASKS
+- None identified
+
+### VERIFICATION RESULTS
+- Ran: `bun run typecheck` → exit 0, no errors
+- Ran: `bun run build` → exit 0, bundled 200 modules
+- Ran: `rg "ThinkingPart" src/hooks/session-recovery/` → only related types/functions found, interface removed
+- Ran: `rg "fallbackRevertStrategy" src/hooks/session-recovery/` → only comment found, function removed
+- Ran: `rg "createSessionRecoveryHook" src/hooks/` → exports intact
+
+### LEARNINGS
+- `ThinkingPart` interface vs `ThinkingPartType` type vs `prependThinkingPart` function - different entities, verify before removing
+- `fallbackRevertStrategy` was likely a planned feature that never got integrated into the recovery flow
+
+소요 시간: ~2분
+
+---
+
+## [2025-12-08 19:04] - Task 3: Remove unused builtinMcps export from MCP module
+
+### DISCOVERED ISSUES
+- None - `builtinMcps` export was genuinely unused (no external importers)
+
+### IMPLEMENTATION DECISIONS
+- Removed `export const builtinMcps = allBuiltinMcps` from line 24
+- Kept `allBuiltinMcps` const - used internally by `createBuiltinMcps` function
+- Kept `createBuiltinMcps` function - actively used in src/index.ts:89
+
+### PROBLEMS FOR NEXT TASKS
+- None identified
+
+### VERIFICATION RESULTS
+- Ran: `bun run typecheck` → exit 0, no errors
+- Ran: `bun run build` → exit 0, bundled 200 modules
+- Ran: `rg "builtinMcps" src/mcp/index.ts` → no matches (export removed)
+- Ran: `rg "createBuiltinMcps" src/mcp/index.ts` → function still exists
+
+### LEARNINGS
+- `createBuiltinMcps` function vs `builtinMcps` export - function is used, direct export is not
+- Internal const `allBuiltinMcps` should be kept since it's referenced by the function
+
+소요 시간: ~2분
+
+---
+