internal/pkg: rename inputs method

Inputs is more correct than dependencies in the current terminology.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/pkg/pkg.go

@@ -405,13 +405,13 @@ type Artifact interface {
 	// Result must remain identical across multiple invocations.
 	Params(ctx *IContext)
 
-	// Dependencies returns a slice of [Artifact] that the current instance
-	// depends on to produce its contents.
+	// Inputs returns a slice of [Artifact] the current instance has access to
+	// while producing its output.
 	//
 	// Callers must not modify the retuned slice.
 	//
 	// Result must remain identical across multiple invocations.
-	Dependencies() []Artifact
+	Inputs() []Artifact
 
 	// IsExclusive returns whether the [Artifact] is exclusive. Exclusive
 	// artifacts might not run in parallel with each other, and are still
@@ -2180,7 +2180,7 @@ func (c *Cache) cure(a Artifact, curesExempt bool) (
 		break
 
 	case FloodArtifact:
-		deps := a.Dependencies()
+		deps := a.Inputs()
 		f := FContext{t, make(map[Artifact]cureRes, len(deps))}
 
 		var wg sync.WaitGroup
@@ -2697,6 +2697,8 @@ func IsCollected(err error) bool { return errors.As(err, new(Collected)) }
 // [pkg.Artifact]. It returns [Collected].
 type Collect []Artifact
 
+var _ Artifact = new(Collect)
+
 // Cure returns [Collected].
 func (*Collect) Cure(*FContext) error { return Collected{} }
 
@@ -2706,8 +2708,8 @@ func (*Collect) Kind() Kind { return kindCollection }
 // Params is a noop: dependencies are already represented in the header.
 func (*Collect) Params(*IContext) {}
 
-// Dependencies returns [Collect] as is.
-func (c *Collect) Dependencies() []Artifact { return *c }
+// Inputs returns [Collect] as is.
+func (c *Collect) Inputs() []Artifact { return *c }
 
 // IsExclusive returns false: Cure is a noop.
 func (*Collect) IsExclusive() bool { return false }