v0.5: capture lane, sqlite store, refresher wired to both

capture.py — read the platform's own JSON instead of the pixels it painted.
Network capture on X (/i/api/graphql HomeLatestTimeline) and Threads
(/graphql/query feedData); in-document read on Instagram, whose feed is
prefetched into a RelayPrefetchedStreamCache script and never crosses the
wire. 190 X rows in 0.9s against the DOM lane's 10 in 11.1s, with exact
integer counts and view numbers the DOM never exposes. Waits for
Network.loadingFinished, not responseReceived — the body is not there yet at
responseReceived. Nothing captured raises; an empty list would say the
platform posted nothing when the truth is our listener missed it.

store.py — SQLite, stdlib only. platform_checks / items / metrics.
id = sha1(platform|kind|url or text), first_seen written once and ts under
COALESCE so a derived Threads marker cannot decay across passes.
FEED_PER_PLATFORM = 10 caps any one platform before the merge, or X's ~185
rows a pass sort Instagram's 3 off the page entirely. dashboard.json is now a
derived view of the database; dashboard.html did not have to change for it.

refresher.py — check_all runs the background-safe platforms in parallel
(19.0s sequential to 6.1s), tiktok still sequential and foreground.
--skip-foreground leaves it out of a timed pass and store.latest_checks keeps
returning its last real result with its own older checkedAt; stale is honest,
a fabricated row is not. Browser down stays the third state and exits 0.

.gitignore: socialmag.db (regenerable), deploy/kdmirah/ (carries the box's
VNC password and addresses — stays in the lab, out of git).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

.gitignore

@@ -2,3 +2,5 @@ __pycache__/
 *.pyc
 state.json
 Archived/
+socialmag.db
+deploy/kdmirah/