* Prevent duplicate Go packages after source replacement resolution
Source analysis already applies module replacements through go/packages. Avoid synthesizing the same replacement again from go.mod while retaining fallback synthesis for modules that source analysis did not resolve.
Constraint: Preserve unimported and local-path replacement cataloging.
Rejected: Deduplicate only during final assembly | That retains redundant license lookup and ambiguous metadata ownership.
Confidence: high
Scope-risk: narrow
Directive: Keep go.mod fallback packages limited to modules absent from source analysis.
Tested: Focused replacement regression, related Go module parser tests, go vet, gofmt, and diff checks.
Not-tested: Docker-backed full cataloger fixtures; local root storage was exhausted by image generation.
Signed-off-by: ychampion <ychampion@users.noreply.github.com>
* Keep replacement fixtures with the Go module test data
Constraint: The maintainer reserves internal/gotestdata for fixtures that need special Go tooling discovery.
Rejected: Leave this fixture in gotestdata | The regression opens its module explicitly and does not need the special location.
Confidence: high
Scope-risk: narrow
Directive: Use internal/gotestdata only when a fixture must avoid Go testdata discovery rules.
Tested: replacement regression repeated 10 times; Go module parser table; go vet for the Go cataloger; gofmt; diff checks.
Not-tested: Full cataloger package; three unrelated parser fixtures fail identically on exact prior head in this environment.
Signed-off-by: ychampion <ychampion@users.noreply.github.com>
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Signed-off-by: ychampion <ychampion@users.noreply.github.com>
Co-authored-by: ychampion <ychampion@users.noreply.github.com>