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/feedback_syncro_labor_tax.md

@@ -1,14 +0,0 @@
----
-name: feedback-syncro-labor-tax
-description: Labor is never taxable in Arizona — always set taxable=false on labor line items in Syncro
-metadata: 
-  node_type: memory
-  type: feedback
-  originSessionId: d91f202e-ddd5-46d7-b674-f848eb78aa8e
----
-
-Always pass `"taxable": false` explicitly on labor line items via `add_line_item`.
-
-**Why:** Labor products are configured with `taxable: false` in Syncro, but the `add_line_item` API endpoint does not inherit the product's taxable setting — it posts the line item as `taxable: true` regardless of the product config.
-
-**How to apply:** Include `"taxable": false` in every `add_line_item` payload for labor products (remote, onsite, in-shop, emergency, prepaid). The product itself is correct; the API just doesn't carry it through.