Herdr Cleanup

What changed

• SSOT relocated. Herdr tool entry moved Core/AI/Tools/External/Utilities.md → Core/IT/Utils/External/Utilities.md (it’s a terminal multiplexer, not an AI tool). AI dept keeps a one-line pointer; Core/AI/Notes/WSL-Windows Config.md cross-links why Ubuntu terminals run Herdr instead of tmux.
• Core/IT/Utils/Custom/herdr-workspace.md is the working “home” note — usage, config file locations, reorder script, gotchas.
• Core tab cwd fixed to /mnt/d/FSS/KB/Core/_WorkingOn/Tasks and made first tab. ~/utils/herdr-workspace.sh (bootstrap script) rewritten so fresh builds get this automatically.
• Live tab reorder made a self-serve script: ~/utils/herdr-reorder-core-first.sh — closes/recreates non-Core tabs (only way to reorder; herdr has no reorder command), refuses to run if any tab has an active agent.
• Self-heal for WSL restarts. herdr-workspace.sh now checks all canonical tabs and recreates any missing one on every new terminal (via ~/.bashrc) — a WSL/Ubuntu restart hangs up every pane’s shell, which herdr prunes as “closed”; this no longer requires manual recovery.
• Template tab removed (final simplification) — closed live, dropped from herdr-workspace.sh’s TABS array. Canonical set now 7: Core, KB-mBR, Acct-HST, KB-OS, monorepo, utils, web-deploy.

Key gotchas (for future config changes)

• session.json is server-persisted runtime state, not a config file. A tab’s cwd is set only once, at herdr tab create --cwd ... time — editing the bootstrap script’s --cwd value does nothing to an already-existing tab. Must close + recreate to change cwd.
• No tab-reorder command exists. Position = pure creation order. To reorder, close everything after the target position and recreate in desired order.
• A WSL/Ubuntu restart, not herdr server stop, causes tab loss — panes get signal=Hangup on restart, which herdr treats as tabs closing.
• Custom vs External folder convention confirmed: Custom/ = scripts Talbot/Claude authored (one file per util); External/Utilities.md = consolidated reference about third-party tools themselves. A custom wrapper script around an external tool belongs in Custom/; the tool’s own reference stays in External/Utilities.md.

Full session detail (all Claude/Talbot exchanges): git log -p -- Core/IT/Tasks/herdr-cleanup.md.