v0.2.80

Recognize Antigravity Argon model IDs 1418/1419 and Flash Lite ID 1050, including native placeholder and display labels. Preserve native Claude costUSD values, explicit zero costs and cost-only records while pricing only unrecorded token subsets. Existing cache revisions re-read unchanged local logs after parser updates. No new telemetry, permissions or upload fields. Verified with official-source/schema-faithful fixtures, 217 tests, typecheck, build and package validation.