feat: v3.0.0 - intelligent search, GitHub person/project mode, ELI5, 13+ sources

v3 rewrites the search engine from the ground up:

- Intelligent pre-research: resolves X handles, GitHub repos, subreddits,
  TikTok hashtags, and YouTube channels before searching
- GitHub person-mode: PR velocity, top repos by stars, release notes
- GitHub project-mode: live star counts, README, releases, top issues
- ELI5 mode: plain language synthesis, no jargon
- 13+ sources: Reddit, X, YouTube, TikTok, Instagram, HN, Polymarket,
  GitHub, Threads, Pinterest, Perplexity, Bluesky, Web
- Free Reddit comments via public JSON (no API key needed)
- Fun judge v2: humor scoring baked into narrative
- Cookie consent before browser scanning
- 10,000 free ScrapeCreators calls
- 1,012 tests

Thank you to the community contributors whose issues and PRs shaped v3:
@uppinote20 (#143), @zerone0x (#134, #136), @thinkun (#116),
@thomasmktong (#124), @fanispoulinakisai-boop (#100), @pejmanjohn (#78),
@zl190 (#115), @hnshah (#84, #85, #86)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/lib/log.py

@@ -0,0 +1,28 @@
+"""Shared logging utilities for last30days skill."""
+
+import os
+import sys
+
+DEBUG = os.environ.get("LAST30DAYS_DEBUG", "").lower() in ("1", "true", "yes")
+
+
+def debug(msg: str) -> None:
+    """Log debug message to stderr (only when LAST30DAYS_DEBUG is set)."""
+    if DEBUG:
+        sys.stderr.write(f"[DEBUG] {msg}\n")
+        sys.stderr.flush()
+
+
+def source_log(prefix: str, msg: str, *, tty_only: bool = True) -> None:
+    """Log a source module message to stderr.
+
+    Args:
+        prefix: Source label (e.g. "Reddit", "Bird").
+        msg: Message text.
+        tty_only: If True, only log when stderr is a TTY (avoids cluttering
+                  non-interactive output like Claude Code).
+    """
+    if tty_only and not sys.stderr.isatty():
+        return
+    sys.stderr.write(f"[{prefix}] {msg}\n")
+    sys.stderr.flush()