Add batch command for converting all sessions to HTML archive (#11)

* Add batch command for converting all sessions to HTML archive

Adds a new `batch` command that converts all local Claude Code sessions
into a browsable HTML archive with:

- Master index listing all projects with session counts
- Per-project pages listing sessions by date
- Individual session transcripts (using existing generate_html)

New features:
- `find_all_sessions()` - discovers sessions grouped by project
- `get_project_display_name()` - extracts readable names from encoded paths
- `--dry-run` flag to preview what would be converted
- `--include-agents` flag to include agent-* session files
- Progress indicator during conversion

Usage: claude-code-transcripts batch -o ./my-archive

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

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

* Refactor batch command for better code reuse and error handling

- Move datetime import to module level for consistency
- Add progress_callback parameter to generate_batch_html() for progress reporting
- Add try/except around individual session conversion with failed_sessions tracking
- Refactor batch_cmd() to use generate_batch_html() instead of duplicating the loop
- Add --quiet/-q flag to suppress non-error output for scripting

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

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

* Fix --quiet flag not respected in dry-run mode

- Wrap dry-run output in `if not quiet` check
- Add test for --quiet with --dry-run combination
- Add .playwright-mcp/ to .gitignore
- Rename html variable to html_content to avoid shadowing html module
- Remove unused imports from test file

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

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

* Add batch command documentation to README

Document the new batch command that converts all local Claude Code
sessions to a browsable HTML archive with master and project indexes.

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

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

* Rename batch command to all

https://gistpreview.github.io/?be627e42c25a1ffdf39cfb2f9a79f1ff/index.html

Refs #11 (comment)

---------

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Simon Willison <swillison@gmail.com>

Author: 3 people

.gitignore

@@ -1,3 +1,4 @@
 .DS_Store
 __pycache__
 uv.lock
+.playwright-mcp/

README.md

@@ -26,11 +26,12 @@ uvx claude-code-transcripts --help
 
 This tool converts Claude Code session files into browseable multi-page HTML transcripts.
 
-There are three commands available:
+There are four commands available:
 
 - `local` (default) - select from local Claude Code sessions stored in `~/.claude/projects`
 - `web` - select from web sessions via the Claude API
 - `json` - convert a specific JSON or JSONL session file
+- `all` - convert all local sessions to a browsable HTML archive
 
 The quickest way to view a recent local session:
 
@@ -99,6 +100,44 @@ claude-code-transcripts json session.jsonl --open
 
 When using [Claude Code for web](https://claude.ai/code) you can export your session as a `session.json` file using the `teleport` command.
 
+### Converting all sessions
+
+Convert all your local Claude Code sessions to a browsable HTML archive:
+
+```bash
+claude-code-transcripts all
+```
+
+This creates a directory structure with:
+- A master index listing all projects
+- Per-project pages listing sessions
+- Individual session transcripts
+
+Options:
+
+- `-s, --source DIRECTORY` - source directory (default: `~/.claude/projects`)
+- `-o, --output DIRECTORY` - output directory (default: `./claude-archive`)
+- `--include-agents` - include agent session files (excluded by default)
+- `--dry-run` - show what would be converted without creating files
+- `--open` - open the generated archive in your default browser
+- `-q, --quiet` - suppress all output except errors
+
+Examples:
+
+```bash
+# Preview what would be converted
+claude-code-transcripts all --dry-run
+
+# Convert all sessions and open in browser
+claude-code-transcripts all --open
+
+# Convert to a specific directory
+claude-code-transcripts all -o ./my-archive
+
+# Include agent sessions
+claude-code-transcripts all --include-agents
+```
+
 ### Auto-naming output directories
 
 Use `-a/--output-auto` to automatically create a subdirectory named after the session: