docs(readme): add conditional pnpm rebuild fallback

Author: dutifulbob

README.md

@@ -52,6 +52,13 @@ pnpm install
 pnpm extension:build
 ```
 
+If `pnpm install` warns about ignored build scripts, run this once and then build again:
+
+```bash
+pnpm rebuild
+pnpm extension:build
+```
+
 3. Open Chrome → `chrome://extensions`
 4. Enable **Developer mode** (top right)
 5. Click **Load unpacked** → select the `extension/` folder

docs/logs/2026-02-15.md

@@ -5,7 +5,7 @@ date: 2026-02-15
 tz: Europe/Berlin
 created: 2026-02-15T00:08:59+01:00
 last_section: 2026-02-15T23:00:55+01:00
-updated: 2026-02-15T23:01:59+01:00
+updated: 2026-02-15T23:03:33+01:00
 ---
 
 ## 00:08
@@ -836,3 +836,14 @@ Opened new PR for README install command formatting update.
 - PR: https://github.com/janitrai/janitr/pull/27
 - Title: `docs(readme): show install shell commands in code block`
 - PR body updated to include summary/why/validation.
+
+Updated README install section to include `pnpm rebuild` as a conditional fallback (not a primary setup step).
+
+- Added short guidance: run rebuild only if `pnpm install` warns about ignored build scripts.
+- Added fallback command block:
+  - `pnpm rebuild`
+  - `pnpm extension:build`
+
+Validation:
+
+- `pnpm run format:check` passed.