chore(lint): add repo-wide anti-slop profile

.oxlintrc.json

@@ -0,0 +1,26 @@
+{
+  "$schema": "./gui/node_modules/oxlint/configuration_schema.json",
+  "plugins": [],
+  "jsPlugins": [
+    {
+      "name": "anti-slop",
+      "specifier": "./gui/.eslint/anti-slop/index.mjs"
+    }
+  ],
+  "categories": {
+    "correctness": "off"
+  },
+  "env": {
+    "builtin": true,
+    "node": true
+  },
+  "rules": {
+    "anti-slop/no-chained-type-assertions": "warn",
+    "anti-slop/no-known-value-widening": "warn",
+    "anti-slop/no-object-parameters": "warn",
+    "anti-slop/no-reflect-apply": "error",
+    "anti-slop/no-reflect-get": "error",
+    "anti-slop/no-widen-then-assert": "warn",
+    "anti-slop/require-safety-comment-for-type-assertion": "warn"
+  }
+}

CONTRIBUTING.md

@@ -58,18 +58,19 @@ A ready-for-review PR is the author's claim that the change is complete, underst
 ## Pre-push hook
 
 After cloning, run once to install a local pre-push hook that runs the typecheck,
-unit-test, privacy-scan, and (when `gui/` changed) GUI eslint and React Doctor
-portions of the CI gate:
+repository anti-slop lint, unit-test, privacy-scan, and (when `gui/` changed) GUI
+eslint and React Doctor portions of the CI gate:
 
 ```sh
 bun run setup:hooks
 ```
 
 This installs a `pre-push` hook (into the hooks dir git reports, so worktrees and
-`core.hooksPath` work) that runs `bun run prepush` — `typecheck`,
-`lint:gui:if-changed`, `test`, `privacy:scan`, and `doctor:gui:if-changed` —
-before every `git push`. Both `lint:gui:if-changed` and `doctor:gui:if-changed`
-run their check only when the push touches `gui/`.
+`core.hooksPath` work) that runs `bun run prepush` — `typecheck`, the repository
+`lint` over `src/` and `scripts/`, `lint:gui:if-changed`, `test`, `privacy:scan`,
+and `doctor:gui:if-changed` — before every `git push`. Both
+`lint:gui:if-changed` and `doctor:gui:if-changed` run their check only when the
+push touches `gui/`.
 The same checks run on ubuntu-latest, macos-latest, and windows-latest in CI (CI
 additionally builds the GUI and smoke-tests the CLI). Skip in an emergency with
 `git push --no-verify`.

gui/.eslint/anti-slop/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 Dillon Mulroy
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

gui/.eslint/anti-slop/README.md

@@ -0,0 +1,40 @@
+# OpenCodex anti-slop profile
+
+This directory contains an OpenCodex-local adaptation of selected rules from `dmmulroy/anti-slop`, snapshot `446268e5d15baa968eaec669ff65358d36ae6259`.
+
+The upstream project explicitly recommends vendoring and customising its rules. OpenCodex therefore owns this copy and its policy instead of taking a moving package dependency.
+
+## Enabled rules
+
+The repository enables these rules across runtime source, scripts, and dashboard TypeScript:
+
+- `no-chained-type-assertions` - warning during migration.
+- `no-known-value-widening` - warning during migration.
+- `no-object-parameters` - warning during migration.
+- `no-reflect-apply` - error.
+- `no-reflect-get` - error.
+- `no-widen-then-assert` - warning during migration.
+- `require-safety-comment-for-type-assertion` - warning during migration.
+
+Warnings keep the existing codebase lintable while making new low-evidence patterns visible. The two Reflect rules are errors because the repository has no legitimate production use of those dynamic escape hatches.
+
+## Intentionally excluded upstream rules
+
+OpenCodex accepts untrusted provider, protocol, process, and JSON input at explicit boundaries. `unknown`, narrow `typeof` checks, and dictionary-shaped boundary data can therefore be correct rather than slop. We do not enable upstream policies that broadly reject those patterns.
+
+The local profile intentionally omits:
+
+- `no-conditional-empty-object-spread`
+- `no-module-mocking`
+- `no-runtime-typeof`
+- `no-shape-in-symbol-names`
+- `no-unknown-parameters`
+- `no-unknown-returns`
+- `no-unknown-type-aliases`
+- `no-unsafe-dictionary-type`
+
+## Implementation note
+
+The plugin uses Oxlint's ESLint-compatible JavaScript plugin shape directly. It has no runtime npm dependency, so the same vendored file can be loaded by both repository lint configurations without coupling one package install tree to another.
+
+Upstream is MIT licensed. See `LICENSE` in this directory.