@@ -0,0 +1,20 @@
+---
+'@objectstack/cloud-connection': patch
+'@objectstack/metadata-protocol': patch
+---
+
+fix(cloud-connection,metadata-protocol)!: install-local's uninstall door asks the uninstall verb's guards and writes its audit row (#31283)
+
+Clause-②: yes (narrowing) — both arms. Narrowing: `DELETE /api/v1/marketplace/install-local/:manifestId` refuses, with the uninstall verb's guard refusal (today the runtime's `409 PACKAGE_DISABLE_RESTRICTED_BY_VALIDATION_RULE`), an uninstall it answered `200` before: one that would withdraw a field an active validation rule of another enabled package reads. Widening: two new public members of `ObjectStackProtocolImplementation` (`@objectstack/metadata-protocol`), `runUninstallGuards` and `recordPackageUninstall`, and one new exported type, `PackageUninstallRecord`.
+Metadata-protocol: none
+Skills-docs: one move — `content/docs/deployment/marketplace-handbook.mdx` (Uninstalling) states the refusal and the audit row; no `skills/**` page teaches this door's uninstall.
+
+<!-- adr-0087: not-required (no-migration-prescription) no key of any schema is added, removed or re-shaped and no stored row is read differently: the narrowing is one runtime refusal at one door, the refusal `DELETE /api/v1/packages/:id` already answers for the same package, and its remedy is the rule it names (switch the rule off or change it, or keep the package installed); the two protocol members are additions, so there is nothing for `objectstack migrate meta` to rewrite. -->
+
+**BREAKING** for a caller of install-local's uninstall door that uninstalled a package another package's active validation rule depends on.
+
+- **Before.** `DELETE /api/v1/marketplace/install-local/:manifestId` withdrew the package and ran the protocol's uninstall cleanups, but never went through the uninstall verb (`deletePackage`), so it skipped what the verb does before and after: the pre-uninstall guards (the runtime's dependent-rule refusal) and the package's own `package_uninstall` audit row. Uninstalling a package whose `objectExtensions` field an active rule of another package reads answered `200`; the field left the served object and the rule then failed closed on every write to it. No uninstall through this door was audited.
+- **Now.** The door asks the verb's guards before anything moves, through the protocol's one runner of them (`runUninstallGuards`, which `deletePackage` asks too), and answers a refusal as the guard spelled it — code, status and message — with the ledger entry, the registration and the served fields as they were. A completed uninstall writes one `package_uninstall` row through the protocol's one writer of it (`recordPackageUninstall`, which `deletePackage` calls too), naming the package, the version removed and the operator.
+- **Unchanged.** `deletePackage` asks the same guards and writes the same row as before. A runtime with no audit plugin writes no row; a protocol from a build without the two members is not asked, and the door behaves as before.
+
+**The remedy.** Switch off or change the rule the refusal names, or keep the package installed.
@@ -254,6 +254,11 @@ the detail.
    from the running kernel and revokes its permission sets and their grants. The
    answer's `note` and `cleanups` say whether any part stays loaded until the
    next restart. **Records stored in the app's objects stay in the database.**
+   An uninstall that would withdraw a field an active validation rule of
+   another enabled package reads is refused with
+   `409 PACKAGE_DISABLE_RESTRICTED_BY_VALIDATION_RULE`, naming the rule, and
+   nothing is removed — the same refusal `DELETE /api/v1/packages/:id` answers.
+   A completed uninstall is recorded in the audit log (`package_uninstall`).
 
 ## Staying current with platform versions
 
 
@@ -427,6 +427,17 @@ type UninstallCleanupRunner = {
     runUninstallCleanups?(
         request: Pick<DeletePackageRequest, 'packageId' | 'actor'> & { declared?: UninstallDeclared },
     ): Promise<UninstallCleanupOutcome[]>;
+    /**
+     * [#31283] The verb's pre-uninstall guards, asked through the protocol's
+     * one runner of them — the runner `deletePackage` asks at its first step.
+     */
+    runUninstallGuards?: ObjectStackProtocolImplementation['runUninstallGuards'];
+    /**
+     * [#31283] The verb's `package_uninstall` ledger row (#31186), written
+     * through the protocol's one writer of it — the writer `deletePackage`
+     * calls at its last step.
+     */
+    recordPackageUninstall?: ObjectStackProtocolImplementation['recordPackageUninstall'];
 };
 
 /** The outcome name this door reports when the runner itself could not run. */
@@ -3343,6 +3354,20 @@ export class MarketplaceInstallLocalPlugin implements Plugin {
             const walled = this.refuseWalledCatalogPackage(c, ctx, 'Uninstalling', manifestId, admission);
             if (walled) return walled;
         }
+        // [#31283] THE UNINSTALL VERB'S PRE-UNINSTALL GUARDS, ASKED BEFORE
+        // ANYTHING MOVES. This door cannot delegate to `deletePackage` (it
+        // answers `success: false` for a package with no stored rows, and
+        // drops the tables of the objects it removes), so it asks the verb's
+        // guards through the protocol's one runner of them
+        // (`runUninstallGuards`) — the runtime's dependent-rule refusal (#31232:
+        // an active validation rule of another enabled package reads a field
+        // this package adds through `objectExtensions`) among them — and holds
+        // no copy of any verdict. A refusal is the request's, spelled as the
+        // guard spelled it (`code`, `status`, `message`), with nothing moved.
+        {
+            const refused = await this.askUninstallGuards(c, ctx, manifestId, admission.userId);
+            if (refused) return refused;
+        }
         // [#28511, ADR-0146 D3] THE REGISTRY'S UNINSTALL REFUSAL, ASKED BEFORE
         // THE LEDGER WRITE. The withdrawal below asks the registry to
         // uninstall the package, and the registry refuses a base whose paired
@@ -3383,6 +3408,8 @@ export class MarketplaceInstallLocalPlugin implements Plugin {
                 }
             }
         }
+        // [#31283] The version this uninstall removes, for the package's ledger row.
+        const removedVersion = this.ledger.read(manifestId).entry?.version;
         try {
             this.ledger.remove(manifestId);
         } catch (err: any) {
@@ -3444,6 +3471,13 @@ export class MarketplaceInstallLocalPlugin implements Plugin {
         // re-sync would only read it back.
         const resync = withdrawal ? undefined : await this.announceUninstall(ctx, manifestId);
         if (resync) cleanups.push(resync);
+        // [#31283] The package's own `package_uninstall` ledger row (#31186),
+        // written once the uninstall is durable — the ledger entry is gone —
+        // through the protocol's one writer of it (`recordPackageUninstall`),
+        // never on a refusal above. `itemsRemoved` / `itemsFailed` count the
+        // stored `sys_metadata` items an uninstall removes: an install-local
+        // package is registered from its ledger entry and has none.
+        await this.recordUninstall(ctx, manifestId, removedVersion, admission.userId);
         const withdrawals = (withdrawal ? 1 : 0) + (copies ? 1 : 0) + (resync ? 1 : 0);
         ctx.logger?.info?.(
             `[MarketplaceInstallLocal] uninstalled ${manifestId} (cached manifest removed; `
@@ -3696,6 +3730,65 @@ export class MarketplaceInstallLocalPlugin implements Plugin {
         };
     };
 
+    /**
+     * [#31283] Ask the uninstall verb's pre-uninstall guards about `manifestId`
+     * through the protocol's one runner of them (`runUninstallGuards`), and
+     * answer the first refusal as this request's: `{ success: false, error:
+     * { code, message } }` under the guard's `status`. `undefined` when no
+     * guard refuses.
+     *
+     * No `protocol` service, or a protocol from a build without the runner,
+     * holds no guard this door can ask, and the door behaves as before — the
+     * capability question {@link runUninstallCleanups} asks of its runner. A
+     * throw that is not a coded client refusal is the guard's failure to
+     * judge: it propagates, as it does out of `deletePackage`, and the
+     * uninstall does not proceed.
+     */
+    private askUninstallGuards = async (
+        c: any,
+        ctx: PluginContext,
+        manifestId: string,
+        actor: string,
+    ): Promise<Response | undefined> => {
+        let protocol: UninstallCleanupRunner | undefined;
+        try { protocol = ctx.getService<UninstallCleanupRunner>('protocol'); } catch { /* no protocol service */ }
+        if (typeof protocol?.runUninstallGuards !== 'function') return undefined;
+        try {
+            await protocol.runUninstallGuards({ packageId: manifestId, ...(actor ? { actor } : {}) });
+            return undefined;
+        } catch (err: any) {
+            const status = err?.status;
+            if (typeof err?.code === 'string' && typeof status === 'number' && status >= 400 && status < 500) {
+                return c.json({ success: false, error: { code: err.code, message: String(err.message) } }, status);
+            }
+            throw err;
+        }
+    };
+
+    /**
+     * [#31283] Write the package's `package_uninstall` ledger row through the
+     * protocol's one writer of it (`recordPackageUninstall`). No `protocol`
+     * service, or a protocol from a build without the writer, has no row to
+     * write; the writer itself never throws.
+     */
+    private recordUninstall = async (
+        ctx: PluginContext,
+        manifestId: string,
+        version: string | undefined,
+        actor: string,
+    ): Promise<void> => {
+        let protocol: UninstallCleanupRunner | undefined;
+        try { protocol = ctx.getService<UninstallCleanupRunner>('protocol'); } catch { /* no protocol service */ }
+        if (typeof protocol?.recordPackageUninstall !== 'function') return;
+        await protocol.recordPackageUninstall({
+            packageId: manifestId,
+            ...(version ? { version } : {}),
+            ...(actor ? { actor } : {}),
+            itemsRemoved: 0,
+            itemsFailed: 0,
+        });
+    };
+
     /**
      * [#21490] Run the protocol's registered uninstall cleanups for a package
      * this door just removed from its ledger — ADR-0086 D3's data-plane