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_estimate_hardware.md

@@ -1,12 +0,0 @@
----
-name: feedback_syncro_estimate_hardware
-description: Hardware line items on Syncro estimates always use product_id 32252 with varying name/price per item
-metadata:
-  type: feedback
----
-
-All hardware on estimates uses a single generic product: `product_id: 32252` ("Hardware", `price_retail: 0.0`). The specific item name and cost are set per-line-item via the `name` and `price_retail` fields. Never search for individual hardware product IDs on estimates.
-
-**Why:** There is only one hardware product in Syncro. All hardware items are differentiated by description and price, not by product ID.
-
-**How to apply:** When building an estimate with hardware, always use `32252` as the product_id and set `name` to the specific item (e.g. "Dell OptiPlex 7010") and `price_retail` to the actual cost. Hardware is typically `taxable: true`.