docs: refresh README + CLAUDE.md for current modules; add deploy guide for any Claude

- README/CLAUDE.md: Inventory depth (warranty/value/maintenance/sold/custom fields,
  HomeBox CSV import), Locations page, the two-world data-model rule, API-first +
  service-layer conventions, and the HTTPS-gated future work (MCP/PWA/camera)
- New docs/git-deploy-guide.md: self-contained git + deploy walkthrough for a
  Claude instance working without this repo's CLAUDE.md (NAS is a git checkout,
  push + pull/rebuild, never rsync, secrets in host .env, prisma-at-runtime gotcha)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

README.md

@@ -12,13 +12,18 @@ Live at **http://192.168.0.5:8053**.
   reusable **plant types** (the "kind" record: care notes, sun/water, bloom &
   harvest months, pet toxicity), Wikipedia photos, and plants placed on the shared
   location tree.
-- **Inventory** — durable **items** that nest (boxes within rooms within
-  buildings), with labels, attachments, and logs. Shares the same location spine
-  as the garden.
-- **Animals** — pets & livestock with their own logs, placed on the shared
-  location tree; reminders can be linked to an animal.
+- **Inventory** — durable **items** that nest (a toolbox holds the tools inside
+  it), with labels, photos + manuals/receipts/warranty docs, value & warranty
+  tracking (with expiry warnings), serial/brand, a sold record, and custom fields
+  (e.g. a vehicle's VIN). Schedule recurring **maintenance** per item. **Import
+  straight from HomeBox** via CSV. Shares the same location spine as the garden.
+- **Animals** — pets & livestock with their own logs (feeding, vet, weight, meds)
+  and auto-computed age, placed on the shared location tree; reminders can be
+  linked to an animal.
+- **Locations** — manage the whole place tree (areas, buildings, rooms, storage),
+  nested as deep as you like; everything (plants, items, animals) lives here.
 - **Reminders** — one-off or recurring tasks (every N days / monthly / yearly),
-  optionally linked to a plant or animal.
+  optionally linked to a plant, item, or animal.
 - **REST API** (`/api/v1/*`) — personal access **tokens** with per-scope
   permissions (read plants, log harvests, …) for phone shortcuts, Home Assistant,
   and automation.
@@ -69,7 +74,7 @@ Two ways to ship a change:
 Do **not** rsync over the appdata dir — it would fight the checkout. Secrets
 (`NEXTAUTH_SECRET`, `GITEA_TOKEN`, `UPDATER_SECRET`) live in a gitignored host
 `.env` next to the compose file, never committed. Migrations apply automatically
-on container start.
+on container start. Full deploy walkthrough: [`docs/git-deploy-guide.md`](docs/git-deploy-guide.md).
 
 ## Conventions