Split release into per-track packages

Each shippable artifact (prb, probod server group, probod-bootstrap,
@probo/n8n-nodes-probo, @probo/cookie-banner) now has its own version
file, its own CHANGELOG.md, its own annotated-tag scheme of the form
<track>/v<version>, and its own GitHub Actions release workflow. The
unified release.yaml is removed; the unified CHANGELOG.md becomes a
short index pointing at each per-track file, with the prior history
preserved in CHANGELOG.archive.md.

Probod's CHANGELOG carries the post-split monorepo releases (0.174.0
through 0.181.0) so the server-group history stays continuous and the
probod docker image keeps its existing version line.

contrib/claude/release.md is split into contrib/claude/release/ with
one entrypoint per track plus a README that drives the agent: detect
which tracks have user-facing commits since their last tag and skip
tracks with no relevant changes, so a release request never tags an
unchanged track. The cookie-banner and n8n-node entrypoints add an
explicit npm run build step after the version bump (build.mjs bakes
package.json's version into __SDK_VERSION__) so compile errors and
package-lock.json updates are caught before tagging.

Signed-off-by: Bryan Frimin <bryan@getprobo.com>

packages/cookie-banner/CHANGELOG.md

@@ -0,0 +1,11 @@
+# Changelog
+
+All notable changes to the `@probo/cookie-banner` SDK will be documented in this file.
+
+## Unreleased
+
+## [0.0.0] - 2026-04-27
+
+### Added
+
+- Initial scaffold of the cookie banner SDK with web components, headless and themed entrypoints, settings link element, Google Consent Mode v2 integration, PostHog consent plugin, Global Privacy Control (GPC) support, internationalization with default translations for English, French, German, and Spanish, and graceful config fetch failure handling.

packages/n8n-node/CHANGELOG.md

@@ -0,0 +1,11 @@
+# Changelog
+
+All notable changes to the `@probo/n8n-nodes-probo` package will be documented in this file.
+
+## Unreleased
+
+## [0.0.1] - 2026-04-27
+
+### Changed
+
+- First per-package release. Prior history is in the archived monorepo [CHANGELOG.archive.md](../../CHANGELOG.archive.md).