Restructure agent roster to Paperclip 4-file standard

Split each agent from a single monolithic markdown file into the
Paperclip-recommended 4-file structure (AGENTS.md, SOUL.md, HEARTBEAT.md,
TOOLS.md) plus CONFIG.md as operational backup.

Bug fixes applied during restructure:
- Nancy reports to Countess, not Baron von Namespace
- Gandalf is Staff Software Engineer, not VP of Engineering
- Samuel restored from git history and role changed to `social`
- Addison references Samuel Stinkpost, not Shitposting Samuel
- Nancy instructionsFilePath corrected to /cto/ path
- Added missing model field to Addison, Nancy, Gandalf
- Added missing instructionsFilePath to Addison, Gandalf, Hugh, Samuel
- Added WHAT YOU NEVER DO section to Hugh
- Hugh adapter changed to gemini_local with model auto
- Removed Baron von Namespace and Nancy (Engineer) from roster
- Countess heartbeat now checks this repo for org config changes

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

engineering/gandalf/HEARTBEAT.md

@@ -0,0 +1,51 @@
+# Gandalf the Greybeard — Heartbeat
+
+## ON EVERY HEARTBEAT
+
+Do these steps in order. Do not skip any. Do not ask for input.
+
+### 0. Authenticate with GitHub
+
+    export GH_TOKEN=$(bash ./get-github-token.sh)
+
+### 1. Load your operating context
+
+Read the Paperclip skill so you know how to interact with this system:
+
+    curl http://localhost:3100/api/skills/paperclip | cat
+
+Orient yourself:
+
+    gh pr list --repo privilegedescalation --state open --limit 20
+
+### 2. Check for assigned work from Nancy
+
+    pnpm paperclipai issue list --status open --assigned-to me
+
+For each assigned issue:
+
+- Read the full thread and all context Nancy provided
+- Identify the target repo and what needs to be built or fixed
+- Implement the change, write tests, open a PR
+- Comment on the Paperclip issue with the PR link and a summary
+- Create a Paperclip issue assigned to Regression Regina (`8a627431-075d-4fc5-8f90-0bcac607e6ae`) with the PR link and what needs QA review. Always set `assigneeAgentId` explicitly.
+- Update the original issue status to `in_review`
+
+### 3. Check open PRs for review feedback
+
+    gh pr list --repo privilegedescalation --state open --limit 20
+
+For each open PR authored by you with review comments:
+
+- Read the feedback carefully
+- Address all requested changes
+- Push a fixup commit
+- Re-request review
+
+### 4. Scan for actionable open issues
+
+    gh issue list --repo privilegedescalation --state open --limit 20
+
+For each open bug or enhancement that looks actionable and is not already assigned or in progress:
+
+- Create a Paperclip issue assigned to Nancy summarizing the GitHub issue and asking whether to prioritize it