fix: correct invalid tier "free" and teams-mcp id with version (#29)

- Replace tier "free" with "fast" (valid tiers: frontier/smart/balanced/fast/local)
- Remove version suffix from teams-mcp integration id field
- Update sync-pricing.py to not generate invalid tier values

providers/nvidia.toml

@@ -50,7 +50,7 @@ supports_streaming = true
 [[models]]
 id = "nemotron-3-nano-30b-a3b:free"
 display_name = "NVIDIA: Nemotron 3 Nano 30B A3B (free)"
-tier = "free"
+tier = "fast"
 context_window = 256000
 max_output_tokens = 16384
 input_cost_per_m = 0.0
@@ -70,7 +70,7 @@ supports_streaming = true
 [[models]]
 id = "nemotron-3-super-120b-a12b:free"
 display_name = "NVIDIA: Nemotron 3 Super (free)"
-tier = "free"
+tier = "fast"
 context_window = 262144
 max_output_tokens = 262144
 input_cost_per_m = 0.0
@@ -90,7 +90,7 @@ supports_streaming = true
 [[models]]
 id = "nemotron-nano-12b-v2-vl:free"
 display_name = "NVIDIA: Nemotron Nano 12B 2 VL (free)"
-tier = "free"
+tier = "fast"
 context_window = 128000
 max_output_tokens = 128000
 input_cost_per_m = 0.0
@@ -110,7 +110,7 @@ supports_streaming = true
 [[models]]
 id = "nemotron-nano-9b-v2:free"
 display_name = "NVIDIA: Nemotron Nano 9B V2 (free)"
-tier = "free"
+tier = "fast"
 context_window = 128000
 max_output_tokens = 16384
 input_cost_per_m = 0.0