build(release): track single root product version in release-please

Veect is a hosted SaaS deploying continuously (ADR-027), so release-please
now tracks only the root package with plain v* tags. Drops the five
packages/* entries ahead of story 03's feature deletions so ADR-021's
commit -> release automation keeps working through them.

include-component-in-tag is set to false rather than removed: the
upstream default is true and the node strategy derives a component from
package.json, so literal key removal would keep component-prefixed tags
(template-vertical-v*) instead of the wanted plain v* tags.

Pre-1.0 bump policy (bump-patch-for-minor-pre-major) and changelog
sections are retained. The release workflow's SBOM steps already use the
tag-format-agnostic tag_name output; only its header comment needed
updating. Per-feature CHANGELOG.md files stay on disk untracked by
release-please until story 03 deletes them with their packages.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016j8z4VHjedXDTjEDNg7qHK

release-please-config.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json",
   "release-type": "node",
-  "include-component-in-tag": true,
+  "include-component-in-tag": false,
   "separate-pull-requests": false,
   "bump-minor-pre-major": false,
   "bump-patch-for-minor-pre-major": true,
@@ -23,32 +23,6 @@
   "packages": {
     ".": {
       "package-name": "template-vertical",
-      "component": "template",
-      "changelog-path": "CHANGELOG.md"
-    },
-    "packages/auth": {
-      "package-name": "@repo/auth",
-      "component": "auth",
-      "changelog-path": "CHANGELOG.md"
-    },
-    "packages/blog": {
-      "package-name": "@repo/blog",
-      "component": "blog",
-      "changelog-path": "CHANGELOG.md"
-    },
-    "packages/media": {
-      "package-name": "@repo/media",
-      "component": "media",
-      "changelog-path": "CHANGELOG.md"
-    },
-    "packages/marketing-pages": {
-      "package-name": "@repo/marketing-pages",
-      "component": "marketing-pages",
-      "changelog-path": "CHANGELOG.md"
-    },
-    "packages/navigation": {
-      "package-name": "@repo/navigation",
-      "component": "navigation",
       "changelog-path": "CHANGELOG.md"
     }
   }