Document the first public release

[IlyaasK]

Summary

Documents v1 as the Kernel Terraform provider's first public release.

• Updates the changelog to the selected public surface: project and browser-pool resources plus four lookup data sources.
• Adds docs/first-release.md with supported surface, durable-state boundaries, and import guidance for existing Kernel objects.
• Describes import as adoption of an existing API object, not migration from an older provider.
• Corrects the release checklist: this repository has no published provider tags.
• Links the first-release guide from the README.

Why this is release work

Users need an accurate initial-release contract before the provider is tagged and published. There is no public upgrade path to document because no earlier provider version has been published.

Provider behavior

No provider behavior, schema, state, import implementation, API, SDK, workflow, or example changes.

Tests run

• gofmt -l cmd internal
• go test -short -timeout=2m ./...
• go vet ./...
• go mod verify
• go mod tidy -diff
• terraform fmt -check -recursive examples
• bash scripts/check-docs.sh
• bash scripts/check-markdown-links.sh
• bash scripts/check-examples.sh
• git diff --check

Acceptance status

Acceptance behavior is unchanged. One complete six-package run against the final release commit remains a manual pre-tag gate.

Intentionally unsupported

• No browser-pool data source.
• No deployment, app, or API-key data sources.
• No profile, proxy, extension, deployment, app, or API-key resources.
• No browser/session runtime operations, force destroy, force release, or recovery.

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Note

Low Risk
Documentation and release-process text only; no provider, schema, or runtime behavior changes.

Overview
Frames v1 as the first public Kernel Terraform provider release and states there is no upgrade or migration from earlier published tags.

CHANGELOG now lists the supported surface (project and browser-pool resources, four lookup data sources, import forms) and what is intentionally excluded, with a pointer to the new guide.

Adds docs/first-release.md covering public API surface, durable-state boundaries, import-as-adoption (not provider migration), and pre-tag acceptance evidence.

docs/release.md preconditions are updated to match (no v0 public narrative; release notes should include the first-release guide). README links to the guide for adoption of existing projects and pools.

^{Reviewed by Cursor Bugbot for commit 887f36b. Bugbot is set up for automated code reviews on this repo. Configure here.}