The _normalized_message_timestamp_for_key helper was preserving
microsecond precision (%.6f). When the same message is persisted by
both the WebUI sidecar JSON writer and the Hermes agent state.db
writer, their timestamps can differ by a few microseconds, causing
_session_message_merge_key to produce different keys for the same
logical message and letting both copies survive the dedup pass in
merge_session_messages_append_only.
Truncating to second-level granularity collapses sub-second drift to
the same key, so the duplicate is suppressed correctly.
Fixes#2616
PR #2521 (Geist Contrast skin) adds a scoped
`:root[data-skin="geist-contrast"] .session-item.active .session-title` rule
that legitimately uses its own palette values. The existing assertion in
test_sprint40_ui_polish.py matched on any line containing the
`.session-item.active .session-title` substring, picking up the skin-scoped
override and asserting against its palette.
Exclude lines containing `:root[data-skin=` from the base-rule scan so
skin-scoped overrides are free to use their own design tokens, while the
global rule still enforces var(--gold) / var(--accent-text).
PR #2521 (Geist Contrast skin) legitimately adds a scoped
`:root[data-skin="geist-contrast"] .theme-pick-btn.active` override that
appears earlier in style.css than the global `#mainSettings .theme-pick-btn.active`
rule. The naive substring search in tests/test_1059_settings_picker_active_state.py
found the skin-specific override first (which correctly uses --border2 for its
palette), failing the global assertion that wanted --accent.
Tighten both assertions to anchor on the `#mainSettings` selector prefix so
they always match the global rule regardless of how many skin-specific
overrides land in the file.
Drop the redundant 'if gw_data else []' guard — gw_data is already
guaranteed to be a dict by the 'or {}' fallback above.
Add a one-line comment explaining the peek-without-pop race window:
a concurrent resolver may pop a different gateway entry, but
approve_session is idempotent over the session key set so the
outcome is the same regardless.
nesquena-hermes