fix: fix missing seed.json on startup by renaming file (#75)

Renamed `data/seed_2025_05_16.json` to `data/seed.json` and updated `Dockerfile`

## Motivation and Context

When cloning the repository and building the project using:

```bash
go build ./cmd/registry
.\\registry.exe
```

the application fails to start because the default seed file path
(`data/seed.json`) does not exist in the repo:

```
Failed to read seed file: failed to read file: open data/seed.json: The system cannot find the file specified.
```

## How Has This Been Tested?

```bash
go build ./cmd/registry
.\\registry.exe // ./registry
```

## Breaking Changes

None

## Types of changes
<!-- What types of changes does your code introduce? Put an `x` in all
the boxes that apply: -->
- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to change)
- [ ] Documentation update

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

Co-authored-by: Adam Jones <adamj+git@anthropic.com>

Dockerfile

@@ -7,7 +7,7 @@ RUN go build ${GO_BUILD_TAGS:+-tags="$GO_BUILD_TAGS"} -o /build/registry ./cmd/r
 FROM alpine:latest
 WORKDIR /app
 COPY --from=builder /build/registry .
-COPY --from=builder /app/data/seed_2025_05_16.json /app/data/seed.json
+COPY --from=builder /app/data/seed.json /app/data/seed.json
 COPY --from=builder /app/internal/docs/swagger.yaml /app/internal/docs/swagger.yaml
 EXPOSE 8080