Fix: Correct 'single command' sections to actually launch proxy + Claude Code

The "En une seule commande" sections were incorrectly identical to Terminal2,
only launching Claude Code without the proxy. This would fail if the proxy
wasn't already running.

Changes:
- Windows: Added Start-Job to launch proxy in background before Claude Code
- macOS: Added background proxy launch with & and sleep 3 for startup delay
- Linux: Added background proxy launch with & and sleep 3 for startup delay
- All: Added explicit comment explaining the command launches both components

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: valorisa

README.md

@@ -76,8 +76,8 @@ $env:ANTHROPIC_AUTH_TOKEN="freecc"
 $env:ANTHROPIC_BASE_URL="http://localhost:8082"
 claude
 
-# En une seule commande (PowerShell)
-$env:ANTHROPIC_AUTH_TOKEN="freecc"; $env:ANTHROPIC_BASE_URL="http://localhost:8082"; claude
+# En une seule commande (PowerShell) - Lance le proxy en arrière-plan puis Claude Code
+cd $env:USERPROFILE\Projets\free-claude-code; Start-Job -ScriptBlock { Set-Location $env:USERPROFILE\Projets\free-claude-code; uv run uvicorn server:app --host 0.0.0.0 --port 8082 }; Start-Sleep -Seconds 3; $env:ANTHROPIC_AUTH_TOKEN="freecc"; $env:ANTHROPIC_BASE_URL="http://localhost:8082"; claude
 ```
 
 **⚠️ Notes spécifiques Windows Enterprise** :
@@ -119,8 +119,8 @@ uv run uvicorn server:app --host 0.0.0.0 --port 8082
 # Terminal2
 ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
 
-# En une seule commande
-ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
+# En une seule commande (lance le proxy en arrière-plan puis Claude Code)
+cd $HOME/Projets/free-claude-code && uv run uvicorn server:app --host 0.0.0.0 --port 8082 & sleep 3 && ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
 ```
 
 **⚠️ Notes spécifiques macOS** :
@@ -162,8 +162,8 @@ uv run uvicorn server:app --host 0.0.0.0 --port 8082
 # Terminal2
 ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
 
-# En une seule commande
-ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
+# En une seule commande (lance le proxy en arrière-plan puis Claude Code)
+cd ~/Projets/free-claude-code && uv run uvicorn server:app --host 0.0.0.0 --port 8082 & sleep 3 && ANTHROPIC_AUTH_TOKEN="freecc" ANTHROPIC_BASE_URL="http://localhost:8082" claude
 ```
 
 **⚠️ Notes spécifiques Linux** :