chore(memory): consolidate scattered feedback/project/reference files

Compressed memory store 104 -> 71 files via four passes:

- Syncro: 19 scattered feedback_syncro_* files merged into 3 rule files
  (api/billing/workflow) + an on-demand feedback_syncro_history.md for
  incident detail, quotes, and tech/product ID tables.
- Four near-duplicate merges: Howard paste-safety, Pluto build server,
  Howard backend deferral, IX server access (ssh+tailscale).
- Per-cluster rule/state/history split applied to GuruConnect (2->1),
  Dataforth (3->2), Cascades (7->3), GuruRMM (13->3).
- New reference_resource_map.md: single auto-loaded cheatsheet for
  "do I have access to X and how do I connect from this machine?"
- MEMORY.md rewritten to match the new layout.

Health: broken backlinks 8->7, overlap clusters 12->5, orphans 17->0.

.claude/memory/reference_ix_server_ssh.md

@@ -1,20 +0,0 @@
----
-name: IX Server SSH Access
-description: SSH access notes for IX server - key auth not set up on GURU-5070 (was CachyOS), must use sshpass with password
-type: reference
----
-
-[VERIFY 2026-05-26 — written under the old CachyOS install; GURU-5070 is now Windows 11. Re-confirm whether key auth is set up before relying on the no-key-auth/sshpass note.]
-
-## IX Server SSH from GURU-5070
-
-- **Host:** 172.16.3.10 (ix.azcomputerguru.com)
-- **User:** root
-- **Password:** See credentials.md
-- **SSH Key Auth:** NOT configured on GURU-5070 (formerly acg-guru-5070; now Windows 11)
-- **Must use:** `sshpass -p 'PASSWORD' ssh -o StrictHostKeyChecking=no -o PubkeyAuthentication=no root@172.16.3.10`
-- **Suppress warnings:** Pipe through `grep -v WARNING | grep -v 'not using'` or `tail`
-
-**Why:** The SSH key from this machine hasn't been added to IX server's authorized_keys yet. The old WSL key (guru@wsl) was authorized but this was a new install (originally CachyOS; GURU-5070 has since been reinstalled to Windows 11).
-
-**How to apply:** When running commands on IX server, use sshpass approach. Consider setting up SSH key auth to simplify future access.