feat: add pricing sync script and update model prices from OpenRouter (#27)

* fix: pin npm package versions in MCP integration templates

Prevent supply chain attacks by pinning exact versions instead of
using unpinned `npx -y @package` which pulls latest on every run.

23 of 25 integrations pinned. sqlite-mcp and aws skipped (packages
not found on npm registry).

* fix: use stable azure/mcp version instead of beta

* feat: add pricing sync script and update model prices from OpenRouter API

- scripts/sync-pricing.py fetches real-time pricing from OpenRouter
- Updated 64 price fields across 13 provider files
- Run periodically or in CI to keep prices current

providers/openai.toml

@@ -80,8 +80,8 @@ display_name = "o3"
 tier = "frontier"
 context_window = 200000
 max_output_tokens = 100000
-input_cost_per_m = 2.00
-output_cost_per_m = 8.00
+input_cost_per_m = 10.0
+output_cost_per_m = 40.0
 supports_tools = true
 supports_vision = true
 supports_streaming = true
@@ -106,8 +106,8 @@ display_name = "o4-mini"
 tier = "smart"
 context_window = 200000
 max_output_tokens = 100000
-input_cost_per_m = 1.10
-output_cost_per_m = 4.40
+input_cost_per_m = 2.0
+output_cost_per_m = 8.0
 supports_tools = true
 supports_vision = true
 supports_streaming = true
@@ -132,8 +132,8 @@ display_name = "GPT-3.5 Turbo"
 tier = "fast"
 context_window = 16385
 max_output_tokens = 4096
-input_cost_per_m = 0.50
-output_cost_per_m = 1.50
+input_cost_per_m = 1.0
+output_cost_per_m = 2.0
 supports_tools = true
 supports_vision = false
 supports_streaming = true
@@ -145,8 +145,8 @@ display_name = "GPT-5"
 tier = "frontier"
 context_window = 400000
 max_output_tokens = 128000
-input_cost_per_m = 1.25
-output_cost_per_m = 10.0
+input_cost_per_m = 0.19999999999999998
+output_cost_per_m = 1.25
 supports_tools = true
 supports_vision = true
 supports_streaming = true
@@ -210,8 +210,8 @@ display_name = "GPT-5.2 Pro"
 tier = "frontier"
 context_window = 400000
 max_output_tokens = 128000
-input_cost_per_m = 1.75
-output_cost_per_m = 14.0
+input_cost_per_m = 21.0
+output_cost_per_m = 168.0
 supports_tools = true
 supports_vision = true
 supports_streaming = true