fix: do not allocate log options for excluded urls

[ferhatelmas]

What kind of change does this PR introduce?

Refactor for performance

What is the current behavior?

• logRequest options is allocated to be ignored for excluded urls
• headerValidator lowercases url and allocates unnecessarily
• httpMetrics allocates exclude prefix unnecessarily

What is the new behavior?

• hoist exclude check in logRequest to prevent allocation
• remove lowercasing in headerValidator
• precompile prefix exclude array in httpMetrics

Additional context

Use performance.now (since we checking diff, not absolute) and fix unit for failed requests.
It will help minor GC.

[Copilot]

Pull request overview

This PR refactors request logging and metrics collection to reduce per-request allocations on excluded routes and to standardize timing measurements using monotonic clocks.

Changes:

• Switch excluded route/url configuration from string[] to Set<string> to enable O(1) membership checks and reduce repeated allocations.
• Hoist excluded-url checks earlier in logRequest and remove per-request option allocation for excluded endpoints.
• Precompute excluded-route prefix checks in httpMetrics and remove lowercasing/allocation in headerValidator.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/http/plugins/metrics.ts	Uses Set-based route exclusion and precomputes excluded prefixes to avoid per-request allocations.
src/http/plugins/log-request.ts	Uses performance.now() and early excluded-url checks to avoid building log payloads for excluded URLs; fixes response time unit consistency.
src/http/plugins/header-validator.ts	Uses Set exclusion and removes toLowerCase() allocation for URL checks.
src/app.ts	Updates monitoring exclusions to a shared Set and passes it into metrics/logging/header validation plugins.
src/admin-app.ts	Updates admin app log-request exclusions to use Set.

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[coveralls]

Coverage Report for CI Build 29011440956

Coverage decreased (-0.02%) to 79.237%

Details

• Coverage decreased (-0.02%) from the base build.
• Patch coverage: 6 uncovered changes across 2 files (14 of 20 lines covered, 70.0%).
• No coverage regressions found.

Uncovered Changes

File	Changed	Covered	%
src/http/plugins/log-request.ts	9	5	55.56%
src/http/plugins/metrics.ts	7	5	71.43%
Total (5 files)	20	14	70.0%

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	12592
Covered Lines:	10423
Line Coverage:	82.77%
Relevant Branches:	7299
Covered Branches:	5338
Branch Coverage:	73.13%
Branches in Coverage %:	Yes
Coverage Strength:	423.35 hits per line

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💛 - Coveralls