Act on the review of the wilm import

Six findings from a four-agent review of the imported work, plus the contract
bump the import owed. Nothing here changes what the imported features do.

The contract version was not bumped for a change that widens what a plugin may
declare. The asset-panel vocabulary gained two tab groups (serviceprocess,
reports), a datetime column format, a map.body key and a tabs section that
renders as a table. 0.29.0 bumped for exactly this class of change when the
optional group was added, so this is 0.31.0 with a ledger row. All four are
optional and resolve server-side when absent, so a plugin declaring none of them
is unaffected.

Site Backups now answers honestly where it has nothing behind it. The overlay is
a compose profile: a separate container writes sets onto a shared volume and the
api container only reads them. A Windows/IIS install runs no such container and
the default root resolves to a drive-letter path nothing creates, so Back Up Now
either failed on PermissionError or reported a run queued that would never
happen, under a banner reading "No verified backup yet" - which describes a
backup that failed, not a feature that was never installed. The three write
routes refuse with the same 404 shape the configuration-policy routes use for a
disabled feature, the list and status routes report whether a store exists, and
the page says so instead of offering buttons.

Two listAll callers still read a response that is not there. listAll resolves to
a plain array through fetchAllPages, so response.data.data throws: PC Types
settings rendered empty, and in Configuration Policies the throw happened inside
the shared try, so PC types, applications, the action catalog and monitors were
all left unassigned by one bad read.

The agent package upload cannot succeed on IIS as shipped. MAX_CONTENT_LENGTH
went to 256 MB to admit the ~69 MB tray binary, but IIS request filtering caps a
body at 30,000,000 bytes and answers 413 before waitress sees the request, so
web.config needs the matching requestLimits.

The backup image could not be built by anyone outside a TLS-intercepting
network. Dockerfile.backup did a plain COPY of a gitignored corporate root CA,
and a COPY of a missing file fails the build. The trailing glob makes it a no-op
when the cert is absent.

endpointstates.domain was the one new string column written without a clamp.
Under STRICT_TRANS_TABLES an over-long value raises Data too long and aborts the
whole check-in, so a single malformed report would stop a machine reporting
telemetry and events entirely.

Not fixed here, and left with upstream: the restore path finalizes its schema
upgrade only from a browser poll loop, so closing the tab mid-restore leaves the
data behind the code; it restores instance files from the newest snapshot rather
than the set that was asked for; and it takes no safety dump before the
destructive load. All three are in the Docker-only overlay, which this site does
not run, and none can be validated here.

Scope: product

docs/CONTRACT-STABILITY.md

@@ -49,6 +49,7 @@ Recorded in the comment block in `shopdb/__init__.py`:
 | 0.27.0 | Added `Script` so a plugin can read the ShopDB-hosted script library that backs endpoint `run_script` delivery without importing core model internals. The endpoints plugin resolves a delivered script by name and serves its body by digest to the agent | additive surface (minor) |
 | 0.29.0 | Added an optional `group` to `get_asset_panels`, naming which detail-page tab a panel belongs to: `details` (the default) / `monitors` / `software` / `activity`. The detail pages are tabbed, and a page that placed panels by knowing their ids would defeat the hook. Additive: an absent or unrecognised group resolves to `details` server-side, so every existing plugin keeps working with no change | additive surface (minor) |
 | 0.28.0 | Added `client_ip` and `strip_port` so a plugin does not hand-roll caller-IP extraction. Two plugins had, and both read the first `X-Forwarded-For` hop, which the caller supplies - so a rate limit keyed on it was defeated by rotating the header. The helper resolves from `remote_addr`, which ProxyFix has already filled from the header when `TRUSTED_PROXY_COUNT` says a proxy is really in front | additive surface (minor) |
+| 0.31.0 | The asset-panel vocabulary a plugin may declare grew four optional things: two more tab groups, `serviceprocess` and `reports`, beside the 0.29.0 set; a `format: 'datetime'` on a column or field, so a panel stops shipping pre-formatted date strings the browser cannot re-localise; a `map.body` key, so a keyvalue field can name where its value lives in a nested payload; and a `tabs` section that carries `columns`/`rows`/`empty` and renders as a table, so one card can hold two tables that share no key (volume capacity and physical drive health are the case). All optional and all resolved server-side when absent, so a plugin declaring none of them is unaffected | additive surface (minor) |
 
 The source comment block documents 0.3.0, 0.4.0, 0.6.0, 0.7.0, 0.9.0, 0.10.0,
 0.11.0, 0.16.0, 0.18.0 and 0.19.0; 0.12.0 through 0.15.0 and 0.17.0 are recorded

docs/PROJECT-MAP.md

@@ -12,7 +12,7 @@ never by editing this file.
 | series | value | governed by |
 |---|---|---|
 | product `__version__` | `0.12.0` | ADR-007 |
-| plugin contract `__contract_version__` | `0.30.0` | ADR-002 |
+| plugin contract `__contract_version__` | `0.31.0` | ADR-002 |
 
 They move independently. A contract bump is not a release.