docs: session continuity file + claude-max-bridge /v1/responses fix

- Add RESUME.md for cross-session continuity (open items, key state, constraints)
- claude-max-bridge: implement /v1/responses (OpenAI Responses API) with
  previous_response_id chaining via server-side history injection into system prompt.
  Root cause of "session already in use": CLI leaves JSONL in un-resumable
  "dequeued" state after each --print run; fix avoids session reuse entirely.
  Also fixed: assistant content must be array-of-blocks not plain string (silent
  JS crash otherwise).
- LiteLLM: add pass_through_endpoints for /v1/responses → claude-max-bridge
- Storage, volumes, architecture docs reconciled (Vaultwarden → local zfs,
  Pocket-ID backup, WAL-G fix, apps/ decommission, Nextcloud CIFS→NFS)
- Add ideas/, proxmox-memory-audit.md, llm-benchmark.md (new docs this session)

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

README.md

@@ -4,6 +4,7 @@ Single source of truth for the homelab. Git-tracked since 2026-05-20.
 
 ## Read this first
 - **[`/CLAUDE.md`](../CLAUDE.md)** (host root) — operator doctrine for any AI agent SSHing in. Skim before touching anything.
+- **[`RESUME.md`](RESUME.md)** — open items + recent changes; update at end of every session.
 - **[`CHANGELOG.md`](CHANGELOG.md)** — what changed and when.
 - **[`ct-inventory.md`](ct-inventory.md)** — canonical roster of LXCs / VM, IPs, role, sizing.
 
@@ -26,15 +27,17 @@ Single source of truth for the homelab. Git-tracked since 2026-05-20.
 │   ├── zoraxy.md                 reverse proxy
 │   ├── adguard-dns.md            DNS + rewrites
 │   ├── cloud-gpu.md              GPU passthrough + future external GPU
-│   └── pocket-id.md              [planned] OIDC IdP + client registry
+│   └── llm-benchmark.md          LiteLLM model TTFT + TPS benchmark
 │
-├── stacks/                    ← CT 104 docker stacks notes
-│   ├── PORTMAP.md             canonical service → port → public hostname registry
-│   ├── CLAUDE.md              agent breadcrumbs (CT 104 specific)
-│   ├── storage.md             [being rewritten] storage class per service
-│   ├── volumes.md             [being rewritten] volume bindings per stack
-│   ├── docker-networks.md
-│   └── todo.md
+├── infra/                     (continued)
+│   ├── portmap.md             canonical service → port → public hostname registry
+│   ├── storage.md             storage class per service (source of truth)
+│   ├── volumes.md             volume bindings per stack
+│   ├── proxmox-memory-audit.md   CT allocations, host budget, ComfyUI memory analysis
+│   └── docker-networks.md
+│
+├── stacks/                    ← CT 104 agent notes + legacy stack docs
+│   └── CLAUDE.md              agent breadcrumbs (CT 104 specific)
 │
 ├── history/                   ← frozen / archived
 │   ├── traefik-migration.md                  ABANDONED 2026-05-16 (Zoraxy chosen)