fix: triage all 16 open GitHub issues — close 9, fix 6, comment 1

Batch 1 (closed): #43 spam, #34 dup, #19 resolved, #2 resolved, #41 answered
Batch 2: Added MIT LICENSE file (#35), closed #42 (license question)
Batch 3 code fixes:
  - #29: YouTube skip reason shows "0 results" instead of "not installed"
  - #30: Bird source mapping handles reddit-web + Bird combo
  - #39: watchlist.py extracts YouTube + TikTok findings, run-one prints output
  - #40: watchlist.py uses search_queries field when available
Batch 4:
  - #32: marketplace.json source "." → "./" with $schema ref
  - #36: commented with investigation plan ($ARGUMENTS forwarding)
  - #4: Added SSL troubleshooting section to README
Also commented on #22 (Bird features) and #31 (skills.sh audit).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

README.md

@@ -886,6 +886,22 @@ This example shows /last30days discovering **emerging developer workflows** - re
 
 At least one API key is required. X search works automatically if you're logged into x.com in your browser. YouTube search activates automatically when yt-dlp is in your PATH.
 
+## Troubleshooting
+
+### macOS: SSL Certificate Verify Failed
+
+If you see `[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate`, your Python installation is missing SSL root certificates. This only affects Python installed from python.org — **Homebrew users are not affected**.
+
+```bash
+# Check which Python you have
+which python3
+# Homebrew: /opt/homebrew/bin/python3 or /usr/local/bin/python3
+# Python.org: /Library/Frameworks/Python.framework/...
+
+# Fix: run the certificate installer (adjust version as needed)
+sudo "/Applications/Python 3.12/Install Certificates.command"
+```
+
 ## How It Works
 
 ### Two-Phase Search Architecture