docs: update roadmap, todo, and add tasklist

Restructure roadmap into phases. Clean up todo as intake buffer.
Add execution tasklist with prioritized items.

TASKLIST.md

@@ -0,0 +1,32 @@
+# PPF Tasklist
+
+Active execution queue. Ordered by priority.
+
+---
+
+## In Progress
+
+| # | Task | File(s) | Notes |
+|---|------|---------|-------|
+| 1 | Skip socket.shutdown on failed connections | rocksock.py | ~39s/session saved on workers |
+| 4 | Add more seed sources (100+) | dbs.py | Expand PROXY_SOURCES list |
+| 6 | Protocol-aware source weighting | httpd.py, ppf.py | Prioritize SOCKS5-yielding sources |
+
+## Queued
+
+| # | Task | File(s) | Notes |
+|---|------|---------|-------|
+| 2 | SQLite connection reuse on odin | httpd.py | Cache per-greenlet handle |
+| 3 | Lazy-load ASN database | httpd.py | Defer to first lookup |
+| 12 | API filters on /proxies (proto/country/ASN) | httpd.py | Consumer query params |
+| 8 | Graduated recheck intervals | proxywatchd.py | Fresh proxies checked more often |
+
+## Done
+
+| # | Task | Date |
+|---|------|------|
+| - | Extraction short-circuits | 2026-02-22 |
+| - | last_seen freshness fix | 2026-02-22 |
+| - | Periodic re-seeding | 2026-02-22 |
+| - | ASN enrichment | 2026-02-22 |
+| - | URL pipeline stats | 2026-02-22 |