perf(compose): optimize chat workspace recompositions

[yacosta738]

Implemented two UI performance optimizations in the Compose Multiplatform chat workspace to reduce allocation pressure and unnecessary recompositions during high-frequency events like typing.

1. Modifier Memoization: Wrapped the top-level Modifier chain in ChatWorkspaceScreen in a remember block, avoiding the re-creation of multiple modifier objects on every keystroke.
2. State Memoization: Used remember(query) for the isSendEnabled check to ensure the boolean calculation only occurs when the text changes and to allow the Button to skip recomposition when its state remains the same.

Added explanatory comments to the code and updated the performance journal in .agents/journal/bolt-journal.md.

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PR created automatically by Jules for task 12071071982286545964 started by @yacosta738

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ℹ️ Recent review info

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📒 Files selected for processing (2)

• .agents/journal/bolt-journal.md
• clients/composeApp/src/commonMain/kotlin/com/profiletailors/corvus/ui/chat/ChatWorkspace.kt

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**/*.kt

⚙️ CodeRabbit configuration file

**/*.kt: Enforce null safety (no !!), structured concurrency, and non-blocking suspend code.
Prefer idiomatic Kotlin (expression bodies, sealed types, value classes when justified).
Verify tests follow TDD intent and use backtick test names where applicable.

Files:

• clients/composeApp/src/commonMain/kotlin/com/profiletailors/corvus/ui/chat/ChatWorkspace.kt

**/*

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Files:

• clients/composeApp/src/commonMain/kotlin/com/profiletailors/corvus/ui/chat/ChatWorkspace.kt

🧠 Learnings (1)

📚 Learning: 2026-02-21T09:07:52.298Z

Learnt from: yacosta738
Repo: dallay/corvus PR: 62
File: .agents/journal/sentinnel-journal.md:1-1
Timestamp: 2026-02-21T09:07:52.298Z
Learning: Branding guideline: The intentional brand name for the security-first agent in the dallay/corvus repository is 'Sentinnel' (with double n). Do not treat it as a typo of 'Sentinel'. Ensure all agent-related docs and journals under .agents/journal consistently use 'Sentinnel' with double n.

Applied to files:

• .agents/journal/bolt-journal.md

🔇 Additional comments (3)

.agents/journal/bolt-journal.md (1)

15-31: LGTM!

The changelog entry accurately documents the performance optimizations with clear problem statements, solutions, and expected impact. Good practice to note that these are runtime optimizations rather than build-time improvements.

clients/composeApp/src/commonMain/kotlin/com/profiletailors/corvus/ui/chat/ChatWorkspace.kt (2)

193-200: LGTM!

Correct memoization with appropriate keys (modifier, colors.background). Theme changes will invalidate the cache, and the parent modifier parameter is properly tracked.

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299-304: LGTM!

Valid optimization. While remember(query) still recalculates on each keystroke, the stable boolean result enables Compose's smart recomposition to skip the Button when enabled doesn't change—which is the majority of keystrokes (only blank↔non-blank transitions matter).

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📝 Walkthrough

Summary by CodeRabbit

• Performance Improvements
  • Optimized chat composition interface for faster, more responsive typing experience
  • Send button now responds quicker during message composition
  • Overall improved smoothness and reduced latency in chat interactions

Walkthrough

Adds changelog entry and implements Compose UI performance optimizations by memoizing the Send button's enable state computation and caching modifier allocations in ChatWorkspaceScreen to reduce recompositions and main-thread work during chat composition.

Changes

Cohort / File(s)	Summary
Documentation .agents/journal/bolt-journal.md	Changelog entry documenting runtime UI optimizations for chat composition, including remember usage and expected performance impacts.
Compose UI Optimizations clients/composeApp/src/commonMain/kotlin/com/profiletailors/corvus/ui/chat/ChatWorkspace.kt	Memoizes isSendEnabled computation with remember(query) and wraps screenModifier in remember to prevent repeated allocations and recompositions during typing.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~12 minutes

Possibly related PRs

• perf: ⚡ Optimize Chat Workspace Performance #80 — Implements similar memoization patterns for ChatWorkspace UI performance improvements.

Suggested labels

area:kotlin, risk:performance, area:docs

🚥 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
Title check	✅ Passed	The title follows Conventional Commit style with 'perf' prefix, uses imperative mood, stays under 72 characters (53 chars), and clearly describes the performance optimization changes.
Description check	✅ Passed	The description includes a clear summary of changes, explains the optimizations with specific implementation details, and documents the updates made. All critical sections are present and complete.

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✅ Contributor Report

User: @yacosta738
Status: Passed (12/13 metrics passed)

Metric	Description	Value	Threshold	Status
PR Merge Rate	PRs merged vs closed	89%	>= 30%	✅
Repo Quality	Repos with ≥100 stars	0	>= 0	✅
Positive Reactions	Positive reactions received	9	>= 1	✅
Negative Reactions	Negative reactions received	0	<= 5	✅
Account Age	GitHub account age	3064 days	>= 30 days	✅
Activity Consistency	Regular activity over time	108%	>= 0%	✅
Issue Engagement	Issues with community engagement	0	>= 0	✅
Code Reviews	Code reviews given to others	421	>= 0	✅
Merger Diversity	Unique maintainers who merged PRs	2	>= 0	✅
Repo History Merge Rate	Merge rate in this repo	90%	>= 0%	✅
Repo History Min PRs	Previous PRs in this repo	157	>= 0	✅
Profile Completeness	Profile richness (bio, followers)	90	>= 0	✅
Suspicious Patterns	Spam-like activity detection	1	N/A	❌

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_{Contributor Report evaluates based on public GitHub activity. Analysis period: 2025-03-18 to 2026-03-18}

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Codecov Report

✅ All modified and coverable lines are covered by tests.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud