Add agent task tracking documentation

Documents the centralized Beads/Dolt task tracking system used by all
Claude Code sessions. Covers architecture, session lifecycle, settings
hierarchy, known issues, and E2E test verification.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/ISSUE_TEMPLATE/feature-request.yml

@@ -0,0 +1,12 @@
+name: Feature Request
+description: Request a new service, configuration change, or improvement
+labels: ["feature-request"]
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: What do you need?
+      description: Describe what you'd like. Be as specific as possible.
+      placeholder: "e.g., Deploy Obsidian for note-taking, or add a new Uptime Kuma monitor for service X"
+    validations:
+      required: true