merge(pi/main): integrate upstream changes through v0.31.1

Merged 53 commits from pi/main including:
- Export HTML rewrite with tree sidebar and /share command
- Hooks API enhancements (custom status, editor, session management)
- Edit diff preview before tool execution
- TUI fixes (Unicode format chars, OSC 8 hyperlinks, emoji optimization)
- Gemini CLI rate limit retry with server-provided delay
- Various bug fixes and documentation updates

Resolved conflicts by preserving Bun migration (spawn→Bun.spawn,
fs→Bun.file) while accepting upstream's new features and APIs.

tsconfig.base.json

@@ -1,8 +1,8 @@
 {
 	"compilerOptions": {
-		"target": "ES2022",
-		"module": "Node16",
-		"lib": ["ES2022"],
+		"target": "ES2024",
+		"module": "ESNext",
+		"lib": ["ES2024"],
 		"strict": true,
 		"esModuleInterop": true,
 		"skipLibCheck": true,
@@ -12,7 +12,7 @@
 		"sourceMap": true,
 		"inlineSources": true,
 		"inlineSourceMap": false,
-		"moduleResolution": "Node16",
+		"moduleResolution": "Bundler",
 		"resolveJsonModule": true,
 		"allowImportingTsExtensions": false,
 		"experimentalDecorators": true,