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.

oxlint.config.ts

@@ -0,0 +1,47 @@
+import { defineConfig } from "oxlint";
+
+// Oxlint here runs only the vendored anti-slop plugin; ESLint remains the
+// general-purpose linter for this repository.
+export default defineConfig({
+  categories: {
+    correctness: "off",
+  },
+  ignorePatterns: [
+    "**/node_modules/**",
+    "**/dist/**",
+    "**/build/**",
+    "**/out/**",
+    "**/.next/**",
+    "**/ios/**",
+    "**/android/**",
+    ".agents/**",
+    ".claude/**",
+    ".conductor/**",
+    ".opencode/**",
+    ".openchamber/**",
+    ".tmp/**",
+    "patches/**",
+    "bun-patches/**",
+    "tools/oxlint/anti-slop/**",
+  ],
+  jsPlugins: [
+    { name: "anti-slop", specifier: "./tools/oxlint/anti-slop/index.ts" },
+  ],
+  rules: {
+    "anti-slop/no-chained-type-assertions": "error",
+    "anti-slop/no-conditional-empty-object-spread": "error",
+    "anti-slop/no-known-value-widening": "error",
+    "anti-slop/no-module-mocking": "error",
+    "anti-slop/no-object-parameters": "error",
+    "anti-slop/no-reflect-apply": "error",
+    "anti-slop/no-reflect-get": "error",
+    "anti-slop/no-runtime-typeof": "error",
+    "anti-slop/no-shape-in-symbol-names": "error",
+    "anti-slop/no-unknown-parameters": "error",
+    "anti-slop/no-unknown-returns": "error",
+    "anti-slop/no-unknown-type-aliases": "error",
+    "anti-slop/no-unsafe-dictionary-type": "error",
+    "anti-slop/no-widen-then-assert": "error",
+    "anti-slop/require-safety-comment-for-type-assertion": "error",
+  },
+});