feat: B.3 - Update UseCase layer to use Model types

[mpyw]

Parent Issue

Part of #128

Summary

Update the UseCase layer to use the new Provider interfaces instead of directly using AWS SDK types (paramapi.*, secretapi.*).

Status

In Progress - This is the main work for PR #2, #3, #4.

Prerequisites (Complete ✅)

• feat: A.1 - Define Scope type for multi-cloud support #132 (A.1: Scope type)
• feat: A.2 - Define Model types (Parameter, Secret) #134 (A.2: Model types)
• feat: A.3 - Define Provider interfaces #137 (A.3: Provider interfaces)
• feat: B.1 - Implement AWS Adapter #133 (B.1: AWS Adapter)
• refactor(usecase): migrate tag operations to provider interfaces #147 (Tag operations migrated)

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PR #2: Read UseCase Migration

Files to Modify

File	Old Interface	New Interface
internal/usecase/param/show.go	ShowClient	provider.ParameterReader
internal/usecase/param/log.go	LogClient	provider.ParameterReader
internal/usecase/param/list.go	ListClient	provider.ParameterReader
internal/usecase/param/diff.go	DiffClient	provider.ParameterReader
internal/usecase/secret/show.go	ShowClient	provider.SecretReader + SecretDescriber
internal/usecase/secret/log.go	LogClient	provider.SecretReader
internal/usecase/secret/list.go	ListClient	provider.SecretReader
internal/usecase/secret/diff.go	DiffClient	provider.SecretReader

Interface Mapping

Old	New
paramapi.GetParameterAPI	provider.ParameterReader.GetParameter
paramapi.GetParameterHistoryAPI	provider.ParameterReader.GetParameterHistory
paramapi.DescribeParametersAPI	provider.ParameterReader.ListParameters
secretapi.GetSecretValueAPI	provider.SecretReader.GetSecret
secretapi.ListSecretVersionIDsAPI	provider.SecretReader.GetSecretVersions
secretapi.ListSecretsAPI	provider.SecretReader.ListSecrets
secretapi.DescribeSecretAPI	provider.SecretDescriber.DescribeSecret

---

PR #3: Write UseCase Migration

Files to Modify

File	Old Interface	New Interface
internal/usecase/param/create.go	CreateClient	provider.ParameterWriter
internal/usecase/param/update.go	UpdateClient	provider.ParameterWriter
internal/usecase/param/delete.go	DeleteClient	provider.ParameterWriter
internal/usecase/secret/create.go	CreateClient	provider.SecretWriter
internal/usecase/secret/update.go	UpdateClient	provider.SecretWriter
internal/usecase/secret/delete.go	DeleteClient	provider.SecretWriter
internal/usecase/secret/restore.go	RestoreClient	provider.SecretRestorer

---

PR #4: Staging Strategy Migration

Files to Modify

File	Old Interface	New Interface
internal/staging/param.go	ParamClient	provider.ParameterService
internal/staging/secret.go	SecretClient	provider.SecretService + SecretRestorer + SecretDescriber
internal/staging/cli/*.go	-	Strategy initialization update
internal/cli/commands/stage/param/	-	Pass Provider adapter
internal/cli/commands/stage/secret/	-	Pass Provider adapter

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Tasks

PR #2

• Migrate internal/usecase/param/show.go
• Migrate internal/usecase/param/log.go
• Migrate internal/usecase/param/list.go
• Migrate internal/usecase/param/diff.go
• Migrate internal/usecase/secret/show.go
• Migrate internal/usecase/secret/log.go
• Migrate internal/usecase/secret/list.go
• Migrate internal/usecase/secret/diff.go
• Update CLI layer to pass adapters
• Update all unit tests

PR #3

• Migrate internal/usecase/param/create.go
• Migrate internal/usecase/param/update.go
• Migrate internal/usecase/param/delete.go
• Migrate internal/usecase/secret/create.go
• Migrate internal/usecase/secret/update.go
• Migrate internal/usecase/secret/delete.go
• Migrate internal/usecase/secret/restore.go
• Update CLI layer
• Update all unit tests
• Run E2E tests

PR #4

• Migrate internal/staging/param.go
• Migrate internal/staging/secret.go
• Update staging CLI wrappers
• Update stage commands
• Update all unit tests
• Run E2E tests

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Verification

go build ./...
make test
make lint
make e2e  # for PR #3, #4