refactor(release): rename workflows and align update-release path

Rename the reusable workflows to release.yml and update-release.yml,
add UPX compression for release binaries, and sync the standalone
update-release workflow with the active release pipeline fixes.
Update README, AGENTS, compliance notes, and changelog references to
match the new workflow names and usage patterns.

AGENTS.md

@@ -30,8 +30,8 @@ Apply these checks before invoking actions:
 
 - Checkout repository first.
 - For prepare/publish flows that depend on tags/history, use full history checkout (`fetch-depth: 0`).
-- Use `secrets.RELEASE_PAT` for release/tag/update operations (prepare/publish/do-release) so tag pushes trigger downstream workflows reliably.
-- `do-release` and `decorate-pr` now run preflight API checks and fail fast when token credentials are missing or insufficient.
+- Use `secrets.RELEASE_PAT` for release/tag/update operations (`prepare`, `publish`, `release`, `update-release`) so authenticated release changes can be pushed and published reliably.
+- `release`, `update-release`, and `decorate-pr` run preflight API checks and fail fast when token credentials are missing or insufficient.
 - Set required vars/secrets for coverage uploads:
   - `vars.ARTEFACT_BUCKET_NAME`
   - `vars.ARTEFACT_BUCKET_ENDPONT`
@@ -83,41 +83,26 @@ Minimal template:
 
 ## Minimal Integration Patterns
 
-### 1. Prepare Then Publish
-
-```yaml
-jobs:
-  prepare:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - id: prepare
-        uses: https://git.hrafn.xyz/aether/vociferate/prepare@v1.1.0
-
-  publish:
-    needs: prepare
-    uses: https://git.hrafn.xyz/aether/vociferate/.gitea/workflows/do-release.yml@v1.1.0
-    with:
-      tag: ${{ needs.prepare.outputs.version }}
-    secrets: inherit
-```
-
-### 2. Publish Existing Tag
+### 1. Full Release Workflow
 
 ```yaml
 jobs:
   release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - id: publish
-        uses: https://git.hrafn.xyz/aether/vociferate/publish@v1.1.0
-        with:
-          version: v1.2.3
+    uses: https://git.hrafn.xyz/aether/vociferate/.gitea/workflows/release.yml@v1.1.0
+    with:
+      version: ${{ inputs.version }}
+    secrets: inherit
+```
+
+### 2. Update Existing Release Tag
+
+```yaml
+jobs:
+  release:
+    uses: https://git.hrafn.xyz/aether/vociferate/.gitea/workflows/update-release.yml@v1.1.0
+    with:
+      tag: v1.2.3
+    secrets: inherit
 ```
 
 ### 3. Coverage Badge Publication