feat(source2): lock dark mode, sans-serif typography, and all recent updates

docs/vibe-coding/aider-cli.md

@@ -0,0 +1,13 @@
+# Aider CLI
+
+Aider does not auto-load `AGENTS.md`; tell it to read the file explicitly.
+
+- One-off: `aider --read AGENTS.md --read SKILLS.md`
+- Persistent: add to `.aider.conf.yml` in the project root:
+  ```yaml
+  read:
+    - AGENTS.md
+    - SKILLS.md
+  ```
+- `--read` files are loaded read-only into context (Aider won't try to edit them),
+  which is the correct mode for rules files.