SCIX-889 fix(search): sort operator queries by score instead of user preference

[thostetler]

Manually typing a second-order operator query (trending, reviews, useful, similar) used the user's saved default sort instead of score desc. The Explore menu path already injected the correct sort; only the manual submit handlers were affected.

• Adds getDefaultSortForQuery() to the search utils — returns score desc for operator queries, fallback sort for everything else
• Applies at both submit handlers: home page and search page
• Adds unit tests for operator detection and regular query passthrough

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.0%. Comparing base (e1e3cc5) to head (c29e000).
⚠️ Report is 8 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #889     +/-   ##
========================================
+ Coverage    64.2%   66.0%   +1.9%     
========================================
  Files         350     338     -12     
  Lines       41492   40070   -1422     
  Branches     2010    2024     +14     
========================================
- Hits        26602   26424    -178     
+ Misses      14847   13604   -1243     
+ Partials       43      42      -1     

Files with missing lines	Coverage Δ
src/utils/common/search.ts	95.7% <100.0%> (+0.2%)	⬆️

... and 42 files with indirect coverage changes

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[Copilot]

Pull request overview

Risk summary: Low-to-medium regression risk. The behavior change is small and well-targeted, but the new operator-detection regex may be overly permissive and could override sort for some non-operator queries.

Findings (priority order):

• medium — Operator detection regex can match operator tokens inside fielded/quoted queries and unintentionally override sort.
  • Impact: users could lose their intended sort for queries that merely contain trending(/reviews( etc. as text.
  • Location: src/utils/common/search.ts:178
  • Minimal fix: constrain detection to start-of-string or whitespace (optionally allowing leading +/-).
  • Confidence: medium

Changes:

• Added getDefaultSortForQuery() to force score desc for second-order operator queries, otherwise preserve a fallback sort.
• Applied the sort override logic to manual submit handlers on both the home page and the search page.
• Added unit tests covering operator detection and passthrough behavior.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File	Description
src/utils/common/search.ts	Adds query-aware default sort selection for second-order operators.
src/utils/common/tests/search.test.ts	Adds unit tests validating operator detection and fallback behavior.
src/pages/search/index.tsx	Uses query-aware default sort on manual submit from the search page.
src/pages/index.tsx	Uses query-aware default sort on manual submit from the home page.