chore(lint): vendor anti-slop oxlint plugin and add batched cleanup pipeline

Vendor the anti-slop Oxlint plugin at tools/oxlint/anti-slop and register it
in oxlint.config.ts, with Oxlint's own rule categories disabled so ESLint
stays the general-purpose linter.

Add scripts/anti-slop.mjs (bun run deslop) mirroring the React Doctor batch
interface: next-batch, check-batch, active, release, top, file. Batch handoff
directories now double as file claims shared across clones via
~/.openchamber/maintenance-claims, so concurrent maintenance batches from
either pipeline never select the same file.

Harden both scheduled maintenance flows: stop on a dirty worktree, stop on
NO BATCH AVAILABLE, validate per package instead of workspace-wide, and pin
react-doctor to 0.9.12. The anti-slop task command documents concrete
good and bad fixes and forbids laundering types to satisfy a rule.

tools/oxlint/anti-slop/rules/no-shape-in-symbol-names.ts

@@ -0,0 +1,39 @@
+import { defineRule } from "@oxlint/plugins";
+import type { ESTree } from "@oxlint/plugins";
+
+const FORBIDDEN_SYMBOL_NAME = "shape";
+
+function containsForbiddenSymbolName(name: string): boolean {
+  return name.toLowerCase().includes(FORBIDDEN_SYMBOL_NAME);
+}
+
+/** Ban the case-insensitive substring "shape" in every JavaScript and TypeScript symbol name. */
+export const noForbiddenTermInSymbolNamesRule = defineRule({
+  meta: {
+    type: "problem",
+    docs: {
+      description:
+        'Disallow the case-insensitive substring "shape" in JavaScript, TypeScript, private, and JSX symbol names.',
+    },
+    messages: {
+      forbiddenSymbolName:
+        'Rename symbol "{{name}}" for its domain role; "shape" describes structure rather than ownership.',
+    },
+  },
+  createOnce(context) {
+    const reportForbiddenSymbolName = (node: ESTree.Node & { name: string }) => {
+      if (!containsForbiddenSymbolName(node.name)) return;
+      context.report({
+        node,
+        messageId: "forbiddenSymbolName",
+        data: { name: node.name },
+      });
+    };
+
+    return {
+      Identifier: reportForbiddenSymbolName,
+      PrivateIdentifier: reportForbiddenSymbolName,
+      JSXIdentifier: reportForbiddenSymbolName,
+    };
+  },
+});