feat(setup): personalized setup wizard with purpose and plugin suggestions

Add a personalization step to `pyra setup` that asks for the user's name,
a one-sentence purpose, and interest areas, then surfaces relevant planned
plugins. Store purpose in GeneralConfig and use it in the system prompt so
Pyra stays task-focused rather than acting as a generic chatbot.

- config/schema.py: add `purpose: str = ""` to GeneralConfig
- setup/wizard.py: add _collect_user_profile(), _suggest_plugins(), _USE_CASE_PLUGINS
- chat/history.py: replace hardcoded _SYSTEM_BASE with _build_system_base() using config values
- config/tui.py: expose purpose field in /config General tab

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

src/pyra/setup/wizard.py

@@ -5,11 +5,20 @@ from rich.panel import Panel
 from rich.text import Text
 
 from pyra.config.manager import save_config
-from pyra.config.schema import ProviderConfig, PyraConfig
+from pyra.config.schema import GeneralConfig, ProviderConfig, PyraConfig
 from pyra.setup.providers import PROVIDERS, Provider, get_provider
 
 console = Console()
 
+_USE_CASE_PLUGINS: dict[str, list[str]] = {
+    "Research & web":           ["websearch", "headless_browser"],
+    "Development & servers":    ["server_manager", "ssh_tool", "docker_tool"],
+    "File management":          ["gdrive", "onedrive", "dropbox_tool"],
+    "Communication bots":       ["matrix_bot", "telegram_bot", "signal_bot"],
+    "Email":                    ["email"],
+    "Productivity & calendars": ["nextcloud"],
+}
+
 
 def run_setup() -> None:
     console.print(Panel(
@@ -19,6 +28,8 @@ def run_setup() -> None:
     ))
     console.print()
 
+    user_name, purpose, use_cases = _collect_user_profile()
+
     provider = _choose_provider()
     model = _choose_model(provider)
 
@@ -32,10 +43,13 @@ def run_setup() -> None:
             provider_id=provider.id,
             model=model,
             base_url=provider.base_url,
-        )
+        ),
+        general=GeneralConfig(user_name=user_name, purpose=purpose),
     )
     save_config(cfg)
 
+    _suggest_plugins(use_cases)
+
     console.print()
     console.print(Panel(
         f"[green]Setup complete![/green]\n\n"
@@ -46,6 +60,58 @@ def run_setup() -> None:
     ))
 
 
+def _collect_user_profile() -> tuple[str, str, list[str]]:
+    console.print("[bold]Let's personalise your setup.[/bold]")
+    console.print()
+
+    name = questionary.text("What should Pyra call you?", default="User").ask()
+    if name is None:
+        raise SystemExit(0)
+    name = name.strip() or "User"
+
+    purpose = questionary.text(
+        "In one sentence, what will you mainly use Pyra for? (optional)",
+    ).ask()
+    if purpose is None:
+        raise SystemExit(0)
+    purpose = purpose.strip()
+
+    use_cases = questionary.checkbox(
+        "Which areas interest you? (Space to select, Enter to confirm)",
+        choices=list(_USE_CASE_PLUGINS.keys()),
+    ).ask()
+    if use_cases is None:
+        raise SystemExit(0)
+
+    console.print()
+    return name, purpose, use_cases or []
+
+
+def _suggest_plugins(use_cases: list[str]) -> None:
+    if not use_cases:
+        return
+
+    lines: list[str] = []
+    for uc in use_cases:
+        plugins = _USE_CASE_PLUGINS.get(uc, [])
+        if plugins:
+            lines.append(f"[bold]{uc}[/bold]")
+            for p in plugins:
+                lines.append(f"  pyra plugin install {p}")
+    if not lines:
+        return
+
+    lines.append("")
+    lines.append("[dim]All listed plugins are in development — install when available.[/dim]")
+
+    console.print()
+    console.print(Panel(
+        "\n".join(lines),
+        title="Suggested plugins",
+        border_style="dim cyan",
+    ))
+
+
 def _choose_provider() -> Provider:
     local = [p for p in PROVIDERS if p.group == "Local"]
     cloud = [p for p in PROVIDERS if p.group == "Cloud"]