Merge origin/master into worktree/web-plugin-config

Master gave the agent-preset nav its own glyph; this branch's plugins glyph
sits beside it, and both keep their own icon. Master's stricter
no-base-to-string rule also reaches this branch's new provider test, whose
fetch-call assertion now names the types it reads instead of stringifying an
unknown body.

tsconfig.host.json

@@ -53,6 +53,7 @@
     "apps/web/tests/agent-preset-authoring.e2e.ts",
     "apps/web/tests/shipped-composition.e2e.ts",
     "apps/web/tests/goal-bar.e2e.ts",
+    "apps/web/tests/feedback-command.e2e.ts",
     "apps/web/tests/startup-auto-selection.e2e.ts",
     "apps/web/tests/produced-files.e2e.ts",
     "apps/web/tests/produced-file-mentions.e2e.ts",