refactor(skills): apply progressive disclosure to gitea skill

Split gitea skill into main file and reference documentation.
Main SKILL.md now focuses on core commands (154 lines, down from 201),
with setup/auth and CI/Actions moved to reference files.

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

skills/gitea/reference/actions-ci.md

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+# Gitea Actions / CI
+
+Commands for debugging CI/Actions workflow failures in Gitea.
+
+## Workflow Runs
+
+```bash
+# List workflow runs
+tea actions runs                     # List all workflow runs
+tea actions runs -o json             # JSON output for parsing
+```
+
+## Jobs
+
+```bash
+# List jobs for a run
+tea actions jobs <run-id>            # Show jobs for a specific run
+tea actions jobs <run-id> -o json    # JSON output
+```
+
+## Logs
+
+```bash
+# Get job logs
+tea actions logs <job-id>            # Display logs for a job
+```
+
+## Full Workflow: Find Failed Job Logs
+
+```bash
+# 1. Find the run ID
+tea actions runs
+
+# 2. Find the job ID from that run
+tea actions jobs <run-id>
+
+# 3. View the logs
+tea actions logs <job-id>
+```
+
+## Tips
+
+- Use `-o json` with runs/jobs for programmatic parsing
+- Run IDs and Job IDs are shown in the output of the respective commands
+- Logs are displayed directly to stdout (can pipe to `grep` or save to file)

skills/gitea/reference/setup.md

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+# Gitea CLI Setup
+
+One-time installation and authentication setup for `tea` CLI.
+
+## Installation
+
+```bash
+brew install tea
+```
+
+## Authentication
+
+The `tea` CLI authenticates via `tea logins add`. Credentials are stored locally by tea.
+
+```bash
+tea logins add                       # Interactive login
+tea logins add --url <url> --token <token> --name <name>  # Non-interactive
+tea logins list                      # Show configured logins
+tea logins default <name>            # Set default login
+```
+
+## Configuration
+
+Config is stored at `~/Library/Application Support/tea/config.yml` (macOS).
+
+To avoid needing `--login` on every command, set defaults:
+
+```yaml
+preferences:
+    editor: false
+    flag_defaults:
+        remote: origin
+        login: git.flowmade.one
+```
+
+## Example: Flowmade One Setup
+
+```bash
+# Install
+brew install tea
+
+# Add login (get token from https://git.flowmade.one/user/settings/applications)
+tea logins add --name flowmade --url https://git.flowmade.one --token <your-token>
+
+# Set as default
+tea logins default flowmade
+```
+
+Now `tea` commands will automatically use the flowmade login when run in a repository with a git.flowmade.one remote.