⚡ Bolt: [Performance Improvement] Virtualize Activity Log with SliverList

[NITISH-R-G]

💡 What: Refactored SosActivityLogScreen to use CustomScrollView and SliverList.builder instead of a nested ListView and Column.
🎯 Why: A Column inside a ListView forces Flutter to eagerly measure and build every single child item simultaneously, defeating list virtualization. This can lead to significant memory spikes and frame drops when rendering large or unbounded dynamic datasets (like an SOS activity history log).
📊 Impact: Reduces total widget builds from O(N) to O(1) based on screen visibility, significantly improving rendering performance and scroll fluidity for users with long activity histories.
🔬 Measurement: Verify by inspecting the DevTools Flutter Inspector timeline when opening the Activity Log tab; memory allocation and build phases should no longer scale linearly with the number of history items.

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PR created automatically by Jules for task 11239880790451425217 started by @NITISH-R-G

Summary by Sourcery

Improve SOS activity log scalability and pull-request workflow handling.

Enhancements:

• Virtualize SOS activity history rendering with sliver-based scrolling to improve performance for large incident logs.

CI:

• Adjust the health dashboard workflow environment configuration to avoid assigning the GitHub Pages environment for pull requests.

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Reviewer's Guide

Refactors SosActivityLogScreen to use a CustomScrollView + sliver-based layout for the activity log, enabling list virtualization and improving performance, while preserving existing UI content and adding padding/scroll behavior adjustments.

File-Level Changes

Change	Details	Files
Replace eager ListView+Column layout with a sliver-based CustomScrollView that virtualizes the activity history list and sliver-izes all states (data/empty/loading/error).	Replaces top-level ListView body with CustomScrollView containing slivers for header content, history list, and bottom padding. Wraps the static header (insurance banner, current session info, section title) in a SliverPadding + SliverToBoxAdapter with a Column for layout and alignment. Refactors history.when data branch to return a SliverList.builder wrapped in SliverPadding, building history cards lazily per visible index. Updates history.when empty, loading, and error branches to return appropriate SliverToBoxAdapter-based slivers with consistent horizontal padding and styling. Adds a bottom SliverPadding to provide trailing scroll space and match previous ListView padding semantics.	lib/ui/sos_activity_log_screen.dart

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