feat(component): Add component change detection

[dmcilvaney]

• refactor(env): Add a WithCancel option to the Env context #43
• feat(git): Add GetCurrentCommit function and WithMetadataOnly option #44
• feat(Provider): Add ResolveSourceIdentity() to the source provider interface #45
• feat(config): Add fingerprint ignore tags to some config fields #46
• feat(component): Add deterministic component fingerprints #47
• feat(cli): Add component identity command #48
• feat(cli): Add component identity-diff command, scenario test #49

[Copilot]

Pull request overview

Adds a component “identity fingerprint” mechanism to support CI change detection and build-queue determination, plus optional dist-git/synthetic-history creation during source preparation.

Changes:

• Introduce azldev component identity and azldev component diff-identity commands and wire them into the component command tree.
• Add a new internal/fingerprint package to compute deterministic component fingerprints from resolved config + source identity + overlays + distro context + “Affects:” commit count.
• Extend source providers/source manager with source-identity resolution and a fetch option to preserve upstream .git for synthetic history generation (--with-git in build/prepare-sources).

Reviewed changes

Copilot reviewed 44 out of 45 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
scenario/internal/buildtest/buildtest.go	Formatting-only change to BuildTest construction.
scenario/component_identity_test.go	New scenario coverage for identity/diff-identity CLI behavior.
scenario/snapshots/TestMCPServerMode_1.snap.json	Snapshot update reflecting new MCP tool exposure for component identity.
scenario/snapshots/TestComponentIdentitySnapshots_identity_help_stdout_1.snap	New snapshot for component identity --help.
scenario/snapshots/TestComponentIdentitySnapshots_identity_help_stderr_1.snap	New stderr snapshot for component identity --help.
scenario/snapshots/TestComponentIdentitySnapshots_identity_help_1.snap.json	New exit-code snapshot for component identity --help.
scenario/snapshots/TestComponentIdentitySnapshots_diff-identity_help_stdout_1.snap	New snapshot for component diff-identity --help.
scenario/snapshots/TestComponentIdentitySnapshots_diff-identity_help_stderr_1.snap	New stderr snapshot for component diff-identity --help.
scenario/snapshots/TestComponentIdentitySnapshots_diff-identity_help_1.snap.json	New exit-code snapshot for component diff-identity --help.
internal/utils/git/git_test/git_mocks.go	Extend git provider mocks with LsRemoteHead.
internal/utils/git/git.go	Add GitProvider.LsRemoteHead (uses git ls-remote).
internal/providers/sourceproviders/sourceproviders_test/sourcemanager_mocks.go	Update mocks for new FetchComponent varargs + add ResolveSourceIdentity.
internal/providers/sourceproviders/sourcemanager.go	Add source identity resolution, fetch options, and provider interface updates.
internal/providers/sourceproviders/rpmcontentsprovider.go	Support new fetch option signature + add RPM-based source identity hashing.
internal/providers/sourceproviders/localidentity.go	New local spec-dir hashing identity provider.
internal/providers/sourceproviders/identityprovider_test.go	Unit tests for local/fedora/rpm identity providers.
internal/providers/sourceproviders/fedorasourceprovider.go	Add PreserveGitDir support and implement upstream source identity.
internal/projectconfig/overlay.go	Exclude overlay Description from fingerprinting via struct tag.
internal/projectconfig/fingerprint_test.go	Guard test ensuring fingerprint exclusions are explicitly tracked.
internal/projectconfig/configfile.go	Add ConfigFile.SourcePath() and ConfigFile.Dir() accessors.
internal/projectconfig/component.go	Exclude config metadata fields from fingerprint hashing.
internal/projectconfig/build.go	Exclude non-build-input fields (reasons/hints/failure policy) from fingerprint hashing.
internal/fingerprint/fingerprint_test.go	Unit tests covering fingerprint behavior and excluded fields.
internal/fingerprint/fingerprint.go	New fingerprint computation logic and input-combination scheme.
internal/fingerprint/doc.go	Package documentation for fingerprint module.
internal/app/azldev/core/sources/synthistory_test.go	Unit tests for affects-commit scanning and synthetic commit creation.
internal/app/azldev/core/sources/synthistory.go	New Affects-commit detection + synthetic history generation utilities.
internal/app/azldev/core/sources/sourceprep_test.go	Update mocks for new fetch options signature.
internal/app/azldev/core/sources/sourceprep.go	Add WithGitRepo option, preserve .git on fetch, generate synthetic history, refactor overlay application flow.
internal/app/azldev/core/componentbuilder/componentbuilder_test.go	Update mocks for new fetch options signature.
internal/app/azldev/cmds/component/preparesources.go	Add --with-git flag and plumb into source preparer.
internal/app/azldev/cmds/component/identity.go	New component identity command and parallel computation logic.
internal/app/azldev/cmds/component/diffsources.go	Whitespace-only change.
internal/app/azldev/cmds/component/diffidentity_test.go	Unit tests for identity diff computation.
internal/app/azldev/cmds/component/diffidentity.go	New component diff-identity command + identity file parsing + diffing.
internal/app/azldev/cmds/component/component.go	Register new identity/diff-identity subcommands.
internal/app/azldev/cmds/component/build.go	Add --with-git flag and plumb into source preparer.
go.mod	Add new dependencies (go-git, hashstructure).
go.sum	Dependency checksum updates for new modules.
docs/user/reference/cli/azldev_component_prepare-sources.md	Auto-generated CLI docs updated for --with-git.
docs/user/reference/cli/azldev_component_identity.md	Auto-generated CLI docs for new component identity.
docs/user/reference/cli/azldev_component_diff-identity.md	Auto-generated CLI docs for new component diff-identity.
docs/user/reference/cli/azldev_component_build.md	Auto-generated CLI docs updated for --with-git.
docs/user/reference/cli/azldev_component.md	Auto-generated CLI docs updated for new subcommands.
change-detection-prd.md	PRD describing the change-detection design and rationale.

[Copilot]

Pull request overview

Copilot reviewed 46 out of 47 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 46 out of 47 changed files in this pull request and generated 2 comments.

[Copilot]

Pull request overview

Copilot reviewed 36 out of 37 changed files in this pull request and generated 4 comments.