feat: add credential encryption key config and improve service token CLI display

- Add CREDENTIAL_ENCRYPTION_KEY environment variable with Fernet key generation guide
- Improve service token issue command to display raw token once with warning
- Refactor token list display function for better UX (new print_service_token_list)
- Keep backward compatibility with print_service_token_table alias

.env.example

@@ -14,6 +14,10 @@ PORTFOLIOHUB_SESSION_TOKEN_TTL_HOURS=12
 PORTFOLIOHUB_CLIENT_TOKEN_DEFAULT_TTL_DAYS=365
 PORTFOLIOHUB_BOT_TOKEN_DEFAULT_TTL_DAYS=365
 
+# Credential encryption key (Fernet, required when DB_ENABLED=true)
+# Generate: python -c "from cryptography.fernet import Fernet; print(Fernet.generate_key().decode())"
+CREDENTIAL_ENCRYPTION_KEY=
+
 # TimescaleDB / PostgreSQL connection settings
 TIMESCALEDB_HOST=localhost
 TIMESCALEDB_PORT=5432

app/cli/commands/service_tokens.py

@@ -81,10 +81,15 @@ def issue_service_token(
         runtime_id=issued.auth_token.runtime_id,
         token=issued.token,
     )
-    render_service_token_result(ctx.obj.console, ctx.obj.output_format, response)
 
-    if ctx.obj.output_format != "json":
-        ctx.obj.console.print(f"masked_token: {mask_token_text(issued.token)}")
+    # 발급 시 1회에 한해 원문 token 출력 (이후 마스킹된 값만 표시됨)
+    if ctx.obj.output_format == "json":
+        from app.cli.core.utils import render_output
+        render_output(ctx.obj.console, "json", response.model_dump(mode="json"))
+    else:
+        ctx.obj.console.print("[bold yellow]⚠ 토큰 원문은 지금 1회만 표시됩니다. 안전한 곳에 저장하세요.[/bold yellow]")
+        ctx.obj.console.print(f"[bold green]token:[/bold green] {issued.token}")
+        render_service_token_result(ctx.obj.console, ctx.obj.output_format, response)
 
 
 @token_app.command("revoke")

app/cli/core/utils.py

@@ -163,26 +163,32 @@ def print_user_detail(console: Console, user: UserResponse) -> None:
     )
 
 
-def print_service_token_table(console: Console, tokens: list[AuthTokenResponse]) -> None:
-    table = Table(title="Service Tokens", expand=True)
-    table.add_column("Name", style="cyan", no_wrap=True)
-    table.add_column("Permission", no_wrap=True)
-    table.add_column("User ID", no_wrap=True)
-    table.add_column("Prefix", no_wrap=True)
-    table.add_column("Expires At", no_wrap=True)
-    table.add_column("Revoked At", no_wrap=True)
-    table.add_column("Created At", no_wrap=True)
-    for token in tokens:
-        table.add_row(
-            token.name,
-            token.permission,
-            token.user_id,
-            token.token_prefix,
-            token.expires_at.isoformat(timespec="seconds") if token.expires_at else "never",
-            token.revoked_at.isoformat(timespec="seconds") if token.revoked_at else "-",
-            token.created_at.isoformat(timespec="seconds") if token.created_at else "N/A",
-        )
-    console.print(table)
+def print_service_token_list(console: Console, tokens: list[AuthTokenResponse]) -> None:
+    for i, token in enumerate(tokens, 1):
+        status = "[red]revoked[/red]" if token.revoked_at else "[green]active[/green]"
+        expires = token.expires_at.isoformat(timespec="seconds") if token.expires_at else "never"
+        last_used = token.last_used_at.isoformat(timespec="seconds") if token.last_used_at else "-"
+        revoked_at = token.revoked_at.isoformat(timespec="seconds") if token.revoked_at else "-"
+        created_at = token.created_at.isoformat(timespec="seconds") if token.created_at else "N/A"
+        lines = [
+            f"[bold cyan]{token.name}[/bold cyan]  ({status})",
+            f"  token    : {token.token_prefix}",
+            f"  id       : {token.id}",
+            f"  user_id  : {token.user_id}",
+            f"  perm     : {token.permission}",
+            f"  expires  : {expires}",
+            f"  last_used: {last_used}",
+            f"  created  : {created_at}",
+        ]
+        if token.revoked_at:
+            lines.append(f"  revoked  : {revoked_at}")
+        console.print("\n".join(lines))
+        if i < len(tokens):
+            console.print("[dim]─[/dim]" * 40)
+
+
+# Keep old name as alias for backward compatibility
+print_service_token_table = print_service_token_list
 
 
 def print_comment_table(console: Console, comments: list[CommentResponse]) -> None: