fix: clear pendingMessageId when continuing existing session

[gunoooo]

Summary by CodeRabbit

• New Features
  • Added automatic SESSION_START lifecycle events for improved session tracking capabilities in version 1.4.0.

[coderabbitai]

Walkthrough

This pull request introduces session tracking with automatic SESSION_START lifecycle events in version 1.4.0. It includes a version bump in the Gradle configuration, updates the changelog, and modifies the SessionService to nullify pendingMessageId during session continuation to ensure clean state management.

Changes

Cohort / File(s)	Summary
Version Management gradle/libs.versions.toml	Updated clix version from 1.3.2 to 1.4.0.
Documentation CHANGELOG.md	Added version 1.4.0 (2026-02-12) release notes documenting session tracking with automatic SESSION_START lifecycle events.
Session Management clix/src/main/kotlin/so/clix/services/SessionService.kt	Nullifies pendingMessageId during session continuation in the checkOrStartSession path to ensure proper state cleanup before activity updates and logging.

Possibly related PRs

• feat: add session tracking #17: Introduced the session start/continuation behavior that this PR refines by clearing pendingMessageId state.

Suggested reviewers

• nyanxyz
• pitzcarraldo

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main functional change: clearing pendingMessageId when continuing an existing session, which matches the core modification in SessionService.kt.

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✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch clear-pending-message-id

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