Anchor scans to page 1; export stable prefixes

Anchor page-run selection to start at page 1 (select_continuous_run_from_page_1) instead of picking the longest run, so newest pages are preserved and the newest timestamp ordinal 0 is always captured. Change boundary logic to always assign stable UIDs and export the captured prefix of an oldest timestamp group even when it may be an unfinished 10-pull, emitting informational warnings (INCOMPLETE_TIMESTAMP_GROUP_EXPORTED / INCOMPLETE_ARC_10_PULL_EXPORTED) instead of dropping rows. Apply the same policy to Arc groups and update arc group annotation and warnings accordingly. Add a new console module for improved CLI output and update cli, live_capture, adapters, and session code to use the new run selection and console helpers. Update docs, mappings, and tests to reflect the new boundary/export behavior and messaging.

docs/limitations.md

@@ -7,8 +7,8 @@ Known limitations:
 - Other NTE banners are not implemented yet.
 - The game appears not to provide a unique server-side roll ID in the decoded record body.
 - UIDs are generated deterministically from decoded fields and timestamp-group order.
-- Boundary timestamp groups may be skipped to avoid exporting unstable data.
-- Page gaps are ignored outside the longest continuous run and reported as warnings.
+- An incomplete oldest timestamp group is still exported (its captured prefix has stable UIDs) and flagged so the user can scroll further on a later scan.
+- Pages are anchored to the continuous run starting at page 1; pages after the first gap are ignored and reported as warnings.
 - Live capture currently uses Windows raw sockets and requires administrator permission.
 - The file adapter reads mitmproxy `.flows` captures for research and testing.
 - The more stable and reliable Npcap/libpcap capture is not implemented yet.