doc: add agent runbooks directory with release process (#5248)

* web: remove redundant SCSS and CSS files superseded by shared

* doc: add agent runbooks directory with release process

AGENTS.md

@@ -32,3 +32,8 @@
 - E2E tests using Ginkgo/Gomega framework
 - Mock servers in `/test/e2e/mock/`
 - Run: `make e2e` or `make alltest`
+
+## Agent Runbooks
+
+Operational procedures for agents are in `doc/agents/`:
+- `doc/agents/release.md` - Release process

doc/agents/release.md

@@ -0,0 +1,80 @@
+# Release Process
+
+## 1. Update Release Notes
+
+Edit `Release.md` in the project root with the changes for this version:
+
+```markdown
+## Features
+* ...
+
+## Improvements
+* ...
+
+## Fixes
+* ...
+```
+
+This file is used by GoReleaser as the GitHub Release body.
+
+## 2. Bump Version
+
+Update the version string in `pkg/util/version/version.go`:
+
+```go
+var version = "0.X.0"
+```
+
+Commit and push to `dev`:
+
+```bash
+git add pkg/util/version/version.go Release.md
+git commit -m "bump version to vX.Y.Z"
+git push origin dev
+```
+
+## 3. Merge dev → master
+
+Create a PR from `dev` to `master`:
+
+```bash
+gh pr create --base master --head dev --title "bump version"
+```
+
+Wait for CI to pass, then merge using **merge commit** (not squash).
+
+## 4. Tag the Release
+
+```bash
+git checkout master
+git pull origin master
+git tag -a vX.Y.Z -m "bump version"
+git push origin vX.Y.Z
+```
+
+## 5. Trigger GoReleaser
+
+Manually trigger the `goreleaser` workflow in GitHub Actions:
+
+```bash
+gh workflow run goreleaser --ref master
+```
+
+GoReleaser will:
+1. Run `package.sh` to cross-compile all platforms and create archives
+2. Create a GitHub Release with all packages, using `Release.md` as release notes
+
+## Key Files
+
+| File | Purpose |
+|------|---------|
+| `pkg/util/version/version.go` | Version string |
+| `Release.md` | Release notes (read by GoReleaser) |
+| `.goreleaser.yml` | GoReleaser config |
+| `package.sh` | Cross-compile and packaging script |
+| `.github/workflows/goreleaser.yml` | GitHub Actions workflow (manual trigger) |
+
+## Versioning
+
+- Minor release: `v0.X.0`
+- Patch release: `v0.X.Y` (e.g., `v0.62.1`)