chore(docs): regenerate AGENTS.md knowledge base (#1118)

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-opencode)

Co-authored-by: justsisyphus <justsisyphus@users.noreply.github.com>
Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
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justsisyphus
2026-01-26 11:48:30 +09:00
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# SHARED UTILITIES KNOWLEDGE BASE
## OVERVIEW
34 cross-cutting utilities: path resolution, token truncation, config parsing, model resolution, agent display names.
55 cross-cutting utilities: path resolution, token truncation, config parsing, model resolution.
## STRUCTURE
```
shared/
├── logger.ts # File-based logging
├── permission-compat.ts # Agent tool restrictions
├── dynamic-truncator.ts # Token-aware truncation
├── frontmatter.ts # YAML frontmatter
├── jsonc-parser.ts # JSON with Comments
├── data-path.ts # XDG-compliant storage
├── opencode-config-dir.ts # ~/.config/opencode
├── claude-config-dir.ts # ~/.claude
├── migration.ts # Legacy config migration
├── opencode-version.ts # Version comparison
├── external-plugin-detector.ts # OAuth spoofing detection
├── model-requirements.ts # Agent/Category requirements
├── model-availability.ts # Models fetch + fuzzy match
├── model-resolver.ts # 3-step resolution
├── model-sanitizer.ts # Model ID normalization
├── shell-env.ts # Cross-platform shell
├── agent-display-names.ts # Agent display name mapping
├── agent-tool-restrictions.ts # Tool restriction helpers
├── agent-variant.ts # Agent variant detection
├── command-executor.ts # Subprocess execution
├── config-errors.ts # Config error types
├── deep-merge.ts # Deep object merge
├── file-reference-resolver.ts # File path resolution
── file-utils.ts # File utilities
├── hook-disabled.ts # Hook enable/disable check
├── pattern-matcher.ts # Glob pattern matching
├── session-cursor.ts # Session cursor tracking
├── snake-case.ts # String case conversion
├── system-directive.ts # System prompt helpers
├── tool-name.ts # Tool name constants
├── zip-extractor.ts # ZIP file extraction
├── index.ts # Barrel export
└── *.test.ts # Colocated tests
├── tmux/ # Tmux TUI integration (types, utils, constants)
├── logger.ts # File-based logging (/tmp/oh-my-opencode.log)
├── dynamic-truncator.ts # Token-aware context window management (194 lines)
├── model-resolver.ts # 3-step resolution (Override → Fallback → Default)
├── model-requirements.ts # Agent/category model fallback chains (132 lines)
├── model-availability.ts # Provider model fetching & fuzzy matching (154 lines)
├── jsonc-parser.ts # JSONC parsing with comment support
├── frontmatter.ts # YAML frontmatter extraction (JSON_SCHEMA only)
├── data-path.ts # XDG-compliant storage resolution
├── opencode-config-dir.ts # ~/.config/opencode resolution (143 lines)
├── claude-config-dir.ts # ~/.claude resolution
├── migration.ts # Legacy config migration logic (231 lines)
├── opencode-version.ts # Semantic version comparison
├── permission-compat.ts # Agent tool restriction enforcement
├── system-directive.ts # Unified system message prefix & types
├── session-utils.ts # Session cursor, orchestrator detection
├── shell-env.ts # Cross-platform shell environment
├── agent-variant.ts # Agent variant from config
├── zip-extractor.ts # Binary/Resource ZIP extraction
├── deep-merge.ts # Recursive object merging (proto-pollution safe, MAX_DEPTH=50)
├── case-insensitive.ts # Case-insensitive object lookups
├── session-cursor.ts # Session message cursor tracking
├── command-executor.ts # Shell command execution (225 lines)
── index.ts # Barrel export for all utilities
```
## WHEN TO USE
## MOST IMPORTED
| Utility | Users | Purpose |
|---------|-------|---------|
| logger.ts | 16+ | Background task visibility |
| system-directive.ts | 8+ | Message filtering |
| opencode-config-dir.ts | 8+ | Path resolution |
| permission-compat.ts | 6+ | Tool restrictions |
## WHEN TO USE
| Task | Utility |
|------|---------|
| Debug logging | `log(message, data)` |
| Limit context | `dynamicTruncate(ctx, sessionId, output)` |
| Parse frontmatter | `parseFrontmatter(content)` |
| Load JSONC | `parseJsonc(text)` or `readJsoncFile(path)` |
| Restrict tools | `createAgentToolAllowlist(tools)` |
| Resolve paths | `getOpenCodeConfigDir()` |
| Compare versions | `isOpenCodeVersionAtLeast("1.1.0")` |
| Resolve model | `resolveModelWithFallback()` |
| Agent display name | `getAgentDisplayName(agentName)` |
| Path Resolution | `getOpenCodeConfigDir()`, `getDataPath()` |
| Token Truncation | `dynamicTruncate(ctx, sessionId, output)` |
| Config Parsing | `readJsoncFile<T>(path)`, `parseJsonc(text)` |
| Model Resolution | `resolveModelWithFallback(client, reqs, override)` |
| Version Gating | `isOpenCodeVersionAtLeast(version)` |
| YAML Metadata | `parseFrontmatter(content)` |
| Tool Security | `createAgentToolAllowlist(tools)` |
| System Messages | `createSystemDirective(type)`, `isSystemDirective(msg)` |
| Deep Merge | `deepMerge(target, source)` |
## PATTERNS
## KEY PATTERNS
**3-Step Resolution** (Override → Fallback → Default):
```typescript
// Token-aware truncation
const { result } = await dynamicTruncate(ctx, sessionID, buffer)
const model = resolveModelWithFallback({
userModel: config.agents.sisyphus.model,
fallbackChain: AGENT_MODEL_REQUIREMENTS.sisyphus.fallbackChain,
availableModels: fetchedModels,
})
```
// JSONC config
const settings = readJsoncFile<Settings>(configPath)
// Version-gated
if (isOpenCodeVersionAtLeast("1.1.0")) { /* ... */ }
// Model resolution
const model = await resolveModelWithFallback(client, requirements, override)
**System Directive Filtering**:
```typescript
if (isSystemDirective(message)) return // Skip system-generated
const directive = createSystemDirective("TODO CONTINUATION")
```
## ANTI-PATTERNS
- **Raw JSON.parse**: Use `jsonc-parser.ts`
- **Hardcoded paths**: Use `*-config-dir.ts`
- **console.log**: Use `logger.ts` for background
- **Unbounded output**: Use `dynamic-truncator.ts`
- **Raw JSON.parse**: Use `jsonc-parser.ts` for comment support
- **Hardcoded Paths**: Use `*-config-dir.ts` or `data-path.ts`
- **console.log**: Use `logger.ts` for background task visibility
- **Unbounded Output**: Use `dynamic-truncator.ts` to prevent overflow
- **Manual Version Check**: Use `opencode-version.ts` for semver safety