fix: resolve pre-commit script issues and update mypy configuration

- Fix unused lambda arguments in observability example
- Add mypy overrides for optional voice dependencies (deepgram, elevenlabs, cartesia)
- Remove redundant type ignore comments from voice providers
- Apply ruff formatting to examples and test files

Author: divshekhar

examples/01_minimal/agent_with_budget.py

@@ -39,6 +39,7 @@
     print(f"Budget exceeded (expected): {e}")
 print()
 
+
 # --- Example 3: Class-level budget ---
 class CostAwareAgent(Agent):
     model = model

examples/01_minimal/quick_run.py

@@ -27,6 +27,7 @@
 print(f"Preset:  {response2.content}")
 print()
 
+
 # --- Way 3: Class-based (best for reuse) ---
 class MyAgent(Agent):
     model = model

examples/01_minimal/response_object.py

@@ -20,12 +20,12 @@
 
 # --- Core fields ---
 print("=== Response Object ===")
-print(f"Content:    {response.content}")         # The answer text
-print(f"Cost:       ${response.cost:.6f}")        # USD spent
-print(f"Tokens:     {response.tokens}")           # Total tokens used
-print(f"Model:      {response.model}")            # Model that responded
-print(f"Duration:   {response.duration:.2f}s")    # Wall-clock time
-print(f"Success:    {bool(response)}")            # True if response has content
+print(f"Content:    {response.content}")  # The answer text
+print(f"Cost:       ${response.cost:.6f}")  # USD spent
+print(f"Tokens:     {response.tokens}")  # Total tokens used
+print(f"Model:      {response.model}")  # Model that responded
+print(f"Duration:   {response.duration:.2f}s")  # Wall-clock time
+print(f"Success:    {bool(response)}")  # True if response has content
 print()
 
 # --- Budget info (only if budget is set) ---

examples/02_tasks/multiple_tasks.py

@@ -12,9 +12,9 @@
 
 from syrin import Agent, Model, task
 
-
 # --- Define the agent with two tasks ---
 
+
 class Writer(Agent):
     """Agent with research and write tasks."""
 

examples/02_tasks/single_task.py

@@ -12,9 +12,9 @@
 
 from syrin import Agent, Model, task
 
-
 # --- Define the agent with a single task ---
 
+
 class Researcher(Agent):
     """Agent that researches topics. Uses @task for a named API."""
 

examples/02_tasks/task_with_output_type.py

@@ -12,9 +12,9 @@
 
 from syrin import Agent, Model, task
 
-
 # --- Define the triage agent ---
 
+
 class TriageAgent(Agent):
     """Agent that triages items with structured output."""
 

examples/03_budget/basic_budget.py

@@ -63,6 +63,7 @@ def my_callback(ctx):
 print(f"Events captured: {len(exceeded_events)}")
 print()
 
+
 # ============================================================
 # 5. Class-level budget — reusable agent definition
 # ============================================================

examples/03_budget/rate_limits.py

@@ -100,7 +100,7 @@ def on_warning(ctx: ThresholdContext) -> None:
         )
     ),
 )
-print(f"   Agent configured with RPM=100, threshold at 80%")
+print("   Agent configured with RPM=100, threshold at 80%")
 
 # ---------------------------------------------------------------------------
 # 6. Multiple thresholds (RPM + TPM)
@@ -135,7 +135,7 @@ def on_warning(ctx: ThresholdContext) -> None:
         ),
     ),
 )
-print(f"   Agent configured with 3 thresholds on RPM/TPM")
+print("   Agent configured with 3 thresholds on RPM/TPM")
 
 # ---------------------------------------------------------------------------
 # 7. Class-level rate limits (reusable agent definition)

examples/03_budget/token_limits.py

@@ -15,7 +15,16 @@
 
 from __future__ import annotations
 
-from syrin import Agent, AgentConfig, Budget, Context, Model, TokenLimits, TokenRateLimit, warn_on_exceeded
+from syrin import (
+    Agent,
+    AgentConfig,
+    Budget,
+    Context,
+    Model,
+    TokenLimits,
+    TokenRateLimit,
+    warn_on_exceeded,
+)
 
 # Create a mock model — no API key needed
 model = Model.Almock()

examples/04_memory/consolidate.py

@@ -11,7 +11,7 @@
 
 from __future__ import annotations
 
-from syrin import Memory, Model
+from syrin import Memory
 from syrin.enums import MemoryType