For simplicity, this PR only moves `gemini-invoke` to a custom command.
The other prompts will be moved in a follow-up.

[Demo](joshualitt/test-repo#1) of this working
e2e

This is a followup to
#348.

Triage / Fix -> joshualitt/test-repo#3
Review -> joshualitt/test-repo#4

AFAICT, tool names are only qualified in the event of collision, and I
do not think any of these names collide. I examined the actual tool
names sent in the prompt to `/gemini-invoke` and they seem to back up
this assertion.

A simple PR to correctly interpolate environment variables in a few
places.

Resolves
#360

This pull request addresses recent workflow failures where the **Gemini
CLI could not perform review tasks** due to **breaking changes** in the
GitHub MCP server.

These changes were introduced in the GitHub MCP server's latest release,
which consolidated the `get_pull_request*` tools into a single
`pull_request_read` with multiple methods.

### Key Changes and Fixes

1. **Dependency Pinning:** The Docker image for the GitHub MCP Server is
now **pinned to a specific version (v0.18.0)** instead of using
`latest`. This prevents unexpected disruptions from future upstream
updates and ensures consistent action stability.
2. **Tool Reference Update:** Updates MCP tool references and associated
prompts for the `review` and `invoke` workflows and examples.

For full details on the upstream changes, see the GitHub MCP Server
release notes:
[v0.18.0 Release
Notes](https://github.com/github/github-mcp-server/releases/tag/v0.18.0)


Fixes #353

Refactor the gemini-dispatch workflow to make command handling more
robust.

The logic is reordered to check for event-based triggers (e.g.,
`pull_request.opened`, `issues.opened`) before parsing the content of a
comment or issue body.

The previous condition `${{ inputs.upload_artifacts }}` would evaluate
to true for any non-empty string, causing artifacts to be uploaded even
when the input was false.

This change corrects the condition to `${{ inputs.upload_artifacts ==
true }}`, ensuring that artifacts are only uploaded when the
`upload_artifacts` input is explicitly set to true.

Co-authored-by: [email protected]

## What's Changed
* Move `gemini-invoke` to custom command. by @joshualitt in
#348
* Move rest of prompts to custom commands. by @joshualitt in
#350
* Normalize tool names in prompts. by @joshualitt in
#351
* Fix interpolation syntax. by @joshualitt in
#357
* Switch to local telemetry and upload manually to GCP by @joshualitt in
#361
* fix: Adapt to GitHub MCP Tooling Consolidation by @cperez08 in
#354
* refactor(ci): prioritize event triggers in dispatch workflow by @jerop
in #366
* fix(action): correct upload artifacts condition by @jerop in
#368

## New Contributors
* @joshualitt made their first contribution in
#348
* @cperez08 made their first contribution in
#354

**Full Changelog**:
v0.1.13...v0.1.14