fix(ci): pin pydantic to ==2.12.5 across all references (#230)

## Description

Pinned the `pydantic` dependency to exact version **==2.12.5** in all
three locations where it was referenced. The CI workflow previously used
a range constraint (`>=2.10.0,<3.0.0`), *pyproject.toml* had no version
constraint, and *config/README.md* referenced an unpinned install. This
consolidation ensures consistent behavior across local development, CI,
and manual regeneration workflows.

Closes #147

## Type of Change

- [x] 🐛 Bug fix (non-breaking change fixing an issue)
- [ ] ✨ New feature (non-breaking change adding functionality)
- [ ] 💥 Breaking change (fix or feature causing existing functionality
to change)
- [x] 📚 Documentation update
- [ ] 🏗️ Infrastructure change (Terraform/IaC)
- [ ] ♻️ Refactoring (no functional changes)

## Component(s) Affected

- [ ] `deploy/000-prerequisites` - Azure subscription setup
- [ ] `deploy/001-iac` - Terraform infrastructure
- [ ] `deploy/002-setup` - OSMO control plane / Helm
- [ ] `deploy/004-workflow` - Training workflows
- [ ] `src/training` - Python training scripts
- [ ] `docs/` - Documentation

## Testing Performed

- [ ] Terraform `plan` reviewed (no unexpected changes)
- [ ] Terraform `apply` tested in dev environment
- [ ] Training scripts tested locally with Isaac Sim
- [ ] OSMO workflow submitted successfully
- [ ] Smoke tests passed (`smoke_test_azure.py`)

## Documentation Impact

- [ ] No documentation changes needed
- [x] Documentation updated in this PR
- [ ] Documentation issue filed

## Bug Fix Checklist

- [x] Linked to issue being fixed
- [ ] Regression test included, OR
- [x] Justification for no regression test: The CI workflow
*validate-config-schema* already validates schema generation with the
installed pydantic version. Changing the pin does not alter runtime
behavior — only the resolved version.

## Checklist

- [x] My code follows the [project conventions](copilot-instructions.md)
- [x] Commit messages follow [conventional commit
format](instructions/commit-message.instructions.md)
- [x] I have performed a self-review
- [x] Documentation impact assessed above
- [x] No new linting warnings introduced

---------

Co-authored-by: Bill Berry <wbery@microsoft.com>

Author: WilliamBerryiii

.github/workflows/validate-config-schema.yml

@@ -35,7 +35,7 @@ jobs:
         uses: astral-sh/setup-uv@6ee6290f1cbc4156c0bdd66691b2c144ef8df19a  # v7.4.0
 
       - name: Install dependencies
-        run: uv pip install --system "pydantic>=2.10.0,<3.0.0"
+        run: uv pip install --system "pydantic==2.12.5"
 
       - name: Regenerate schema
         run: python data-pipeline/capture/config/generate_config_schema.py
@@ -49,7 +49,7 @@ jobs:
             echo "The JSON Schema file does not match the current pydantic models."
             echo "If the models have changed intentionally, regenerate the schema by running the following command locally:"
             echo ""
-            echo "  uv pip install pydantic && python data-pipeline/capture/config/generate_config_schema.py"
+            echo "  uv pip install 'pydantic==2.12.5' && python data-pipeline/capture/config/generate_config_schema.py"
             echo ""
             echo "Then commit the updated schema file."
             echo ""

data-pipeline/capture/config/README.md

@@ -215,7 +215,7 @@ Regenerate the schema whenever you modify:
 
 ```bash
 # Run the schema generation script
-pip install pydantic && PYTHONPATH=. python config/generate_config_schema.py
+pip install 'pydantic==2.12.5' && PYTHONPATH=. python config/generate_config_schema.py
 
 # Verify the updated schema
 git diff config/recording_config.schema.json
@@ -236,5 +236,5 @@ The CI/CD pipeline validates that the schema is up-to-date with the pydantic mod
 
 ## 🔗 Related Documentation
 
-* [LeRobot Integration](../docs/lerobot-inference.md) - Dataset structure and feature mapping
-* [AzureML Validation Job Debugging](../docs/azureml-validation-job-debugging.md) - Training pipeline integration
+* [LeRobot Integration](../docs/inference/lerobot-inference.md) - Dataset structure and feature mapping
+* [AzureML Validation Job Debugging](../docs/operations/azureml-validation-job-debugging.md) - Training pipeline integration

pyproject.toml

@@ -18,7 +18,7 @@ dev = [
     "pytest",
     "pytest-mock",
     "pytest-cov",
-    "pydantic",
+    "pydantic==2.12.5",
     "ipykernel",
     "ipywidgets",
     "tqdm",