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Simplify chat and chat-history screen data loading to fix "Loading conversation history" stuck state on mobile/Safari.

The previous implementation used complex ref-based guards and pathname detection to prevent re-loading, which led to a race condition on mobile/Safari where the loading state was not reset. This PR removes these fragile guards, allowing React effects to naturally re-execute and load data when dependencies change or the component mounts.


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Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>
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Project Deployment Preview Comments Updated (UTC)
mallory Ready Ready Preview Comment Nov 3, 2025 8:39am

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>
Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>
Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>
Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>
Fix syntax error in useActiveConversation.infiniteLoop.test.ts
- Add happy-dom as devDependency
- Setup DOM environment in test-env.ts
- Fix "document is not defined" errors in unit tests
- Enable @testing-library/react renderHook to work

The new useActiveConversation tests use renderHook which requires
a DOM environment. happy-dom provides a lightweight DOM for testing.
When secure storage read fails, we now:
- Catch the error specifically
- Continue to create a new conversation
- Only fail if conversation creation itself fails

This ensures the app remains functional even if storage is broken.
Effects run synchronously in testing environment with happy-dom,
making initial state checks unreliable. Focus on final state instead.
**Problem**: Real-time subscriptions were setting up before initial data
load completed, causing real-time updates to be overwritten when the
initial load's setState replaced the state.

**Solution**: Add isInitialized guard:
- Set isInitialized=false at start of data loading
- Set isInitialized=true after data load completes
- Real-time subscriptions only set up when isInitialized=true
- This ensures subscriptions don't conflict with initial state replacement

**Test**: Added integration test to verify race condition is prevented.

Thanks to @vercel review agent for catching this!
Clean up temporary documentation files - not needed in repo
**Problem**: setIsInitialized(true) was only called on successful load,
so if initial data fetch failed, real-time subscriptions would never
start and users couldn't receive updates.

**Fix**: Move setIsInitialized(true) to finally block so real-time
subscriptions always initialize, even if initial load encounters errors.
This ensures users can still receive real-time updates after recovering
from network issues.

Thanks to @vercel review agent for catching this!
**Problem**: When navigating back to chat-history, the loading spinner
wouldn't show because:
- Old conversations still in state (filteredConversations.length > 0)
- isLoading only set to true inside async function (after delay)
- UI condition: isLoading && filteredConversations.length === 0 = false

**Fix**: Set isLoading(true) synchronously in useEffect before calling
the async load function. This ensures the loading state is set
immediately when navigation occurs.

Thanks to @vercel review agent for catching this UX issue!
@edgarpavlovsky edgarpavlovsky merged commit 8d8f7b9 into main Nov 3, 2025
15 checks passed
edgarpavlovsky added a commit that referenced this pull request Nov 8, 2025
* Refactor chat initialization and active conversation loading

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>

* Fix: Improve chat screen loading and navigation logic

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>

* feat: Add comprehensive infinite loop prevention tests

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>

* feat: Add comprehensive navigation loading tests

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>

* Fix: Add @ts-nocheck to bun test files

Co-authored-by: edgarpavlovsky <edgarpavlovsky@gmail.com>

* fix: Remove duplicate closing brace in test file

Fix syntax error in useActiveConversation.infiniteLoop.test.ts

* fix: Add happy-dom for React hooks testing

- Add happy-dom as devDependency
- Setup DOM environment in test-env.ts
- Fix "document is not defined" errors in unit tests
- Enable @testing-library/react renderHook to work

The new useActiveConversation tests use renderHook which requires
a DOM environment. happy-dom provides a lightweight DOM for testing.

* fix: Use happy-dom v15 (v16 not available)

* fix: Handle storage errors gracefully in useActiveConversation

When secure storage read fails, we now:
- Catch the error specifically
- Continue to create a new conversation
- Only fail if conversation creation itself fails

This ensures the app remains functional even if storage is broken.

* fix: Remove flaky initial state assertions in test

Effects run synchronously in testing environment with happy-dom,
making initial state checks unreliable. Focus on final state instead.

* fix: Prevent race condition in chat-history real-time subscriptions

**Problem**: Real-time subscriptions were setting up before initial data
load completed, causing real-time updates to be overwritten when the
initial load's setState replaced the state.

**Solution**: Add isInitialized guard:
- Set isInitialized=false at start of data loading
- Set isInitialized=true after data load completes
- Real-time subscriptions only set up when isInitialized=true
- This ensures subscriptions don't conflict with initial state replacement

**Test**: Added integration test to verify race condition is prevented.

Thanks to @vercel review agent for catching this!

* chore: Remove documentation markdown files

Clean up temporary documentation files - not needed in repo

* fix: Initialize real-time subscriptions even if initial load fails

**Problem**: setIsInitialized(true) was only called on successful load,
so if initial data fetch failed, real-time subscriptions would never
start and users couldn't receive updates.

**Fix**: Move setIsInitialized(true) to finally block so real-time
subscriptions always initialize, even if initial load encounters errors.
This ensures users can still receive real-time updates after recovering
from network issues.

Thanks to @vercel review agent for catching this!

* fix: Show loading indicator when navigating back to chat-history

**Problem**: When navigating back to chat-history, the loading spinner
wouldn't show because:
- Old conversations still in state (filteredConversations.length > 0)
- isLoading only set to true inside async function (after delay)
- UI condition: isLoading && filteredConversations.length === 0 = false

**Fix**: Set isLoading(true) synchronously in useEffect before calling
the async load function. This ensures the loading state is set
immediately when navigation occurs.

Thanks to @vercel review agent for catching this UX issue!

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
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3 participants