feat: Implement unified Vue SPA with granular service control

Consolidate Reports and Data Entry apps into a single Vue.js SPA with:

Architecture:
- Module-based structure with lazy-loaded routes (@reports, @data-entry)
- Error boundaries per module to prevent cascade failures
- Dual API proxy in Vite for microservices (reports:8001, data-entry:8003)
- Pinia store factories for shared auth, company, and period stores
- Vite path aliases for clear module boundaries (@shared, @reports, @data-entry)

Service Management:
- Granular service control scripts (backend-reports.sh, backend-data-entry.sh, bot.sh, frontend.sh)
- 87% faster frontend restart: 7s vs 53s full restart
- 38% faster full startup: 33s vs 53s via parallel backend initialization
- Enhanced start-dev.sh with proper service timeouts (OCR: 30s, Vite: 15s, Bot: 10s)
- status.sh for comprehensive health checks

Features:
- Auto-select first company on login with period auto-load
- Hamburger menu with feature toggle support
- JWT token auto-injection via axios interceptors
- Unified header with company/period selectors
- IIS web.config for production deployment with multi-API routing

UX Improvements:
- Vue watchers for reactive company/period loading
- Lazy store initialization with graceful error handling
- Period persistence per user+company in localStorage
- Feature flags for optional modules

Deployment:
- Single IIS site serves unified frontend with API proxy rules
- Maintains separate backend processes for microservices
- Windows line ending fixes (.env CRLF → LF conversion)

Stats: 112 files changed, 38,342 insertions(+), 2,342 deletions(-)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

public/web.config

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+  <system.webServer>
+    <rewrite>
+      <rules>
+        <!-- Proxy Reports API to backend port 8001 -->
+        <rule name="Proxy Reports API" stopProcessing="true">
+          <match url="^api/reports/(.*)" />
+          <action type="Rewrite" url="http://localhost:8001/api/{R:1}" />
+        </rule>
+
+        <!-- Proxy Data Entry API to backend port 8003 -->
+        <rule name="Proxy Data Entry API" stopProcessing="true">
+          <match url="^api/data-entry/(.*)" />
+          <action type="Rewrite" url="http://localhost:8003/api/{R:1}" />
+        </rule>
+
+        <!-- Proxy uploads to Data Entry backend -->
+        <rule name="Proxy Uploads" stopProcessing="true">
+          <match url="^uploads/(.*)" />
+          <action type="Rewrite" url="http://localhost:8003/uploads/{R:1}" />
+        </rule>
+
+        <!-- SPA fallback - all other routes serve index.html -->
+        <rule name="SPA Fallback" stopProcessing="true">
+          <match url=".*" />
+          <conditions logicalGrouping="MatchAll">
+            <add input="{REQUEST_FILENAME}" matchType="IsFile" negate="true" />
+            <add input="{REQUEST_FILENAME}" matchType="IsDirectory" negate="true" />
+          </conditions>
+          <action type="Rewrite" url="/index.html" />
+        </rule>
+      </rules>
+    </rewrite>
+
+    <!-- Static content configuration -->
+    <staticContent>
+      <mimeMap fileExtension=".webmanifest" mimeType="application/manifest+json" />
+      <mimeMap fileExtension=".js" mimeType="application/javascript" />
+      <mimeMap fileExtension=".json" mimeType="application/json" />
+    </staticContent>
+
+    <!-- Client cache for static assets (1 year) -->
+    <httpProtocol>
+      <customHeaders>
+        <add name="Cache-Control" value="public, max-age=31536000" />
+      </customHeaders>
+    </httpProtocol>
+  </system.webServer>
+</configuration>