Add teabot daemon implementation

teabot watches Gitea repos and dispatches one-shot Claude Code sessions in
Docker containers to work issues and review PRs, acting as configurable bot
personalities.

Claude-Session: https://claude.ai/code/session_015ur3i7D2azsMAWTSVABApv

docs/config.md

@@ -0,0 +1,57 @@
+# `teabot config`
+
+Inspect and scaffold teabot configuration.
+
+## `teabot config init`
+
+Writes a fully-commented example config to the `--config` path (default
+`~/.config/teabot/config.yaml`).
+
+```bash
+teabot config init            # writes ~/.config/teabot/config.yaml
+teabot config init --force    # overwrite an existing file
+teabot config init -c ./my.yaml
+```
+
+It refuses to overwrite an existing file unless `--force` is given. After
+writing, edit the file and create the tea config files each personality
+references (see [configuration](configuration.md)).
+
+## `teabot config show`
+
+Loads, validates, and prints the effective configuration — defaults applied and
+each personality resolved from its tea config (username shown, token never
+printed). A validation error here means `teabot run` would fail too, so this is
+the quickest pre-flight check.
+
+```bash
+teabot config show
+```
+
+Example output:
+
+```
+config:         /home/ben/.config/teabot/config.yaml
+gitea_url:      https://git.unkin.net
+state_dir:      /home/ben/.local/state/teabot
+poll_interval:  1m0s
+job_timeout:    30m0s
+max_concurrent: 2
+job_image:      git.unkin.net/unkin/agent-dev:latest
+claude_config:  /home/ben/.claude
+repos:
+  - unkin/teabot
+personalities:
+  - implementer (role=implementer, login=teabot-implementer)
+  - reviewer (role=reviewer, login=teabot-reviewer)
+```
+
+## Shell completions
+
+teabot uses cobra, which provides a `completion` subcommand. The RPM installs
+bash/zsh/fish completions to the standard system paths automatically. To load
+ad-hoc:
+
+```bash
+source <(teabot completion bash)   # or zsh / fish
+```