ci: add Release Please flow

[tkkhq]

Summary

• Add Release Please config and workflow for stable release PRs.
• Make publish-cli tag-only for stable releases and reject package.json/tag drift.
• Document the Release Please release process and required token.

Verification

• git diff --check
• parsed Release Please JSON config
• bash -n scripts/ci/resolve-cli-build-env.sh scripts/install-volcano.sh
• npm pack --dry-run --ignore-scripts
• make build FIRST_PARTY_DEVICE_CLIENT_ID=volcano-cli VERSION=v0.0.4
• ./volcano --version

[Copilot]

Pull request overview

This PR introduces a Release Please–based stable release flow. It adds Release Please configuration and a workflow that opens/updates release PRs on main, and refactors publish-cli.yml so it triggers only on SemVer tags (removing the previous main-branch/nightly path). Version integrity is now enforced by requiring the tag to match package.json. Documentation is updated to describe the new process and the required RELEASE_PLEASE_TOKEN.

Changes:

• Add release-please-config.json and .release-please-manifest.json (seeded at 0.0.4, matching package.json) plus a release-please.yml workflow using a PAT so tags trigger follow-on workflows.
• Make publish-cli.yml tag-only: drop the main trigger and nightly build/alias logic, and reject tag ↔ package.json version drift.
• Update CONTRIBUTING.md to document the Release Please process and required token/variable.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
release-please-config.json	Defines the root node package, tag format, and changelog path for Release Please.
.release-please-manifest.json	Seeds the tracked version at 0.0.4.
.github/workflows/release-please.yml	Adds the workflow that creates/updates release PRs and tags via a PAT.
.github/workflows/publish-cli.yml	Switches to tag-only publishing, adds version-match validation, removes nightly logic and now-unused append_historical_assets.
CONTRIBUTING.md	Documents the new Release Please release process and required secret/variable.

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