feat: add SupportPackageIsVersion1 compile-time version sentinel

[ankurs]

Summary

• Add SupportPackageIsVersion1 constant following the gRPC SupportPackageIsVersion pattern
• Reference upstream package sentinels to enforce version compatibility at compile time
• When a breaking change is made, export a new version and remove the old one to force coordinated updates

Test plan

• go build ./... passes (with updated upstream dependencies)

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 3193fb0a-f4a1-4f3d-a2d2-111cdafde876

📥 Commits

Reviewing files that changed from the base of the PR and between c33c2da and 1363aa5.

⛔ Files ignored due to path filters (1)

• go.sum is excluded by !**/*.sum

📒 Files selected for processing (3)

• databuilder.go
• go.mod
• plan.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/support-package-version-sentinel

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[Copilot]

Pull request overview

Adds compile-time “version sentinel” constants to enforce coordinated dependency updates (similar to gRPC’s SupportPackageIsVersion pattern), and updates the tracing dependency accordingly.

Changes:

• Export SupportPackageIsVersion1 from this module for downstream compile-time compatibility checks.
• Add a compile-time reference to tracing.SupportPackageIsVersion1 to pin compatibility with the upstream tracing package.
• Bump github.com/go-coldbrew/tracing to v0.1.0 (and update module sums / indirect deps).

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 1 comment.

File	Description
plan.go	Adds upstream tracing version sentinel reference to enforce compile-time compatibility.
databuilder.go	Exports SupportPackageIsVersion1 sentinel for downstream compatibility enforcement.
go.mod	Updates tracing to v0.1.0 and adjusts indirect requirements.
go.sum	Updates checksums for the tracing version bump.

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