[SOLV-544] chore: Increase intent exclusiveFor window from 1m to 5m

[kiryllifi]

Summary

• Increase the exclusivity window encoded into intent output context bytes from 60s to 5 minutes (5 * ONE_MINUTE) via a new EXCLUSIVITY_WINDOW constant in src/lib/libraries/intent.ts.
• The previous 1-minute window was too short for solver devs to exercise fills end-to-end during manual testing.
• Lock the value with a unit test that decodes the trailing uint32 deadline from order.outputs[0].context and asserts it is now + 5m.

Linear: https://linear.app/lifi-linear/issue/SOLV-544/increase-intent-exclusivefor-window-from-1m-to-5m-for-solver-testing

Test plan

• bun run test:unit
• bun run check
• bun run lint

Summary by CodeRabbit

• Enhancement
  • Extended the exclusivity window duration for exclusive intents to 5 minutes, allowing exclusive intents to remain active longer before reaching their expiration deadline.

[coderabbitai]

📝 Walkthrough

Walkthrough

This PR extends the exclusivity time window for intent order context encoding from 1 minute to 5 minutes. A module-level constant is introduced and the encoder is updated to use it, with corresponding unit test assertions validating the encoded deadline behavior.

Changes

Exclusivity Window Extension to 5 Minutes

Layer / File(s)	Summary
Exclusivity window constant and encoder update src/lib/libraries/intent.ts	Module-level EXCLUSIVITY_WINDOW constant set to 5 * ONE_MINUTE is introduced at line 101. The Intent.encodeOutputs method is updated to compute the exclusive context expiry using currentTime + EXCLUSIVITY_WINDOW instead of an inline 1-minute offset, preserving the existing bytes1/bytes32/uint32 packing layout.
Exclusivity deadline test and helper tests/unit/intent.test.ts	Test suite adds a FIVE_MINUTES constant, extends the makeIntent helper to accept an optional exclusiveFor parameter, and introduces a unit test that verifies when exclusiveFor is set, the encoded context deadline equals now + 5 minutes by parsing the trailing 4 bytes of the context field.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Suggested reviewers

• vladwulf
• jsanmigimeno
• reednaa

Poem

🐰 Five minutes now, more generous and wide,
The intent's exclusivity takes a longer ride,
Constants aligned, and encoders updated true,
Tests verify the deadline—five minutes through! ⏱️✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title accurately summarizes the main change: increasing the intent exclusiveFor window from 1 minute to 5 minutes, which is the primary objective of the PR.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feature/solv-544-increase-intent-exclusivefor-window-from-1m-to-5m-for-solver

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[github-actions]

🚀 Preview deployed!

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