Adversarial security re-gate on the rebased head found 4 issues; fixed:
1. [CORE] api/shares.py public snapshot could leak credentials/paths/tool
payloads. The sanitizer relied on redact_session_data (gated on the
user-toggleable api_redact_enabled) — disabling it exposed API keys, a dict
assistant content was stringified as raw tool data, and session.workspace
survived in transcript text. Now the per-message sanitizer applies ALWAYS-ON
credential redaction (_redact_fn_cached, force=True, ignores the setting) +
scrubs known session/workspace/home paths, and refuses to stringify non-text
structured content. Title is force-redacted too. Regression test proves the
boundary holds with api_redact_enabled=False.
2. [SILENT] api/models.py: my rebase wrongly kept anchor_activity_scenes in
METADATA_FIELDS, moving 250-480KB scene bodies before messages and undoing
master's metadata fast-path (#5854). Removed; 17 #5854 tests pass again.
3. [SILENT] static/index.html: the Share/StopSharing/ExportHTML button triplet
was double-applied by the rebase (duplicate IDs → only the first wired).
Deduped to one each + a count assertion test.
4. tests: fixed the stale Session.load-after-/api/session/new setup (master
keeps new sessions memory-only until first message).
Also (UX, found in the visual flow sweep): a clipboard-copy failure after a
SUCCESSFUL share showed a red 'Share failed' toast and skipped opening the page.
The copy is now isolated — the share succeeds, the page opens, and the toast
shows the link if the clipboard write fails, never a false failure.
Co-authored-by: MicoRobot.
75153f5b79
