Bug: Project 'Files' button shows all files instead of project-specific files

[jms830]

Description

When clicking the "Files" button on a project card in the Projects tab, the dashboard switches to the Files tab but displays ALL files across ALL projects instead of filtering to show only files from the selected project.

Steps to Reproduce

1. Open the Eidolon dashboard
2. Go to the Projects tab
3. Click the "Files" button on any project card
4. Observe that the Files tab shows all files from all projects

Expected Behavior

When clicking "Files" on a specific project:

1. Switch to the Files tab
2. Display ONLY files belonging to that project
3. Show project name/filter indicator at top
4. Provide "Clear filter" or "Show all" button to return to full view

Actual Behavior

• Switches to Files tab correctly
• Shows complete unfiltered list of all files from all projects
• No indication that a filter should be applied
• No way to tell which project was selected

Technical Details

• File: entrypoints/dashboard/main.ts
• The button click likely just calls showTab('files') without passing project context
• The renderFiles() function doesn't accept filter parameters
• Need to add project filtering logic to file rendering

Suggested Implementation

1. Update State

interface AppState {
  // ... existing properties
  fileFilter: {
    projectId: string | null;
    projectName: string | null;
  };
}

2. Update Event Handler

// In project card rendering
filesBtn.addEventListener('click', () => {
  state.fileFilter = { 
    projectId: project.uuid, 
    projectName: project.name 
  };
  showTab('files');
  renderFiles();
});

3. Update renderFiles()

function renderFiles() {
  const filesContainer = document.getElementById('files-list')!;
  let filteredFiles = state.files;
  
  // Apply project filter if active
  if (state.fileFilter.projectId) {
    filteredFiles = state.files.filter(
      f => f.project_uuid === state.fileFilter.projectId
    );
  }
  
  // Show filter indicator if active
  if (state.fileFilter.projectId) {
    showFilterBanner(state.fileFilter.projectName);
  }
  
  // Render filtered files...
}

4. Add Filter UI

Add filter banner to Files tab showing:

• "Showing files from: [Project Name]"
• "Clear filter" button