docs: add AGENTS.md with SOP

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: brtkwr

AGENTS.md

@@ -0,0 +1,68 @@
+# CCS - Claude Code Search
+
+## Overview
+
+CLI tool to search and resume Claude Code conversations using fzf.
+
+## Development
+
+### Build & Test
+
+```bash
+go build -o ccs .
+go test -v -cover
+```
+
+### Install locally
+
+```bash
+cp ccs /usr/local/bin/ccs
+```
+
+## Release Process
+
+1. Update version in `main.go`:
+   ```go
+   const version = "X.Y.Z"
+   ```
+
+2. Commit changes:
+   ```bash
+   git add -A && git commit -m "feat/fix: description"
+   ```
+
+3. Push and tag:
+   ```bash
+   git push
+   git tag vX.Y.Z
+   git push origin vX.Y.Z
+   ```
+
+4. CI will run tests, then release via GoReleaser and update Homebrew tap
+
+## Version Bumping
+
+- **Patch** (0.0.X): Bug fixes, minor tweaks
+- **Minor** (0.X.0): New features, backwards compatible
+- **Major** (X.0.0): Breaking changes
+
+## Architecture
+
+- `main.go` - Single file containing all logic
+- `main_test.go` - Unit tests
+- `.goreleaser.yaml` - Release configuration
+- `.github/workflows/test.yaml` - CI test workflow (reusable)
+- `.github/workflows/release.yaml` - Release workflow (calls test.yaml)
+
+## Key Functions
+
+- `getConversations()` - Loads all conversations from `~/.claude/projects/`
+- `buildSearchLines()` - Creates fzf-compatible search lines (one per conversation)
+- `showPreview()` - Renders preview with matches highlighted
+- `parseConversationFile()` - Parses JSONL conversation files
+
+## Conventions
+
+- Use conventional commits (feat:, fix:, docs:, etc.)
+- Run tests before releasing
+- Keep it simple - single file is fine for this project