feat(deploy): add PTU throughput reservation commands

[gujieye]

Summary

Adds first-class support for PTU (provisioned throughput) reservations to the deploy command family, so users can provision, scale, renew, and release reserved kTPM capacity from the CLI. Existing MU/LORA deployment behavior is preserved.

New capacity deployment subcommands

Command	Purpose
deploy capacity list	List reserved capacity instances for a deployment
deploy capacity get	Show details of a single capacity instance
deploy capacity create	Provision a new reserved capacity instance (kTPM, optional prepaid config)
deploy capacity scale	Change an instance's reserved kTPM
deploy capacity renew	Renew a prepaid capacity instance
deploy capacity delete	Release a reserved capacity instance
deploy capacity unsubscribe	Emit the Alibaba Cloud billing-center refund link for a prepaid instance (link only, no API call)
deploy overflow	Update a deployment's overflow strategy (reserved to pay-as-you-go spillover)
deploy operation get	Fetch a capacity operation's status
deploy operation wait	Poll a capacity operation until it terminates

High-risk write operations carry bilingual risk prompts and require --yes; writes generate a one-time requestId for idempotency and server-side tracing.

Key type extensions (packages/core/src/deploy)

• New types in types.ts: ReservationCapacity, PrePaidInfo, CapacityInstance, CapacityOperation.
• ScaleDeploymentRequest now covers both the legacy MU shape and the new PTU shape (absolute per-instance kTPM, optional prepaid config, order_type).
• api.ts adds wrappers: listCapacityInstances, getCapacityInstance, getCapacityOperation, createCapacityInstance, scaleCapacityInstance, renewCapacityInstance, deleteCapacityInstance, updateDeploymentOverflow, with unified URL encoding helpers.
• New reservation.ts centralizes reservation/prepaid flag structures.

Strategy refactor (plans.ts / reservation.ts)

• ptuStrategy.validateFlags enforces PTU rules with bilingual errors: rejects legacy --capacity/--deploy-spec/--billing-method; validates --charge-type (pre_paid/post_paid, with ptu_default prepaid-only); requires prepaid params and kTPM to be grouped and safe integers.
• muStrategy auto-selects a matching deploy template from listDeployableModels when not in --dry-run and no explicit --deploy-spec; dry-run / explicit spec skip the catalog call.
• HTTP client (client/http.ts) centralizes request timeout + abort handling and preserves the caller's abort reason.

Tests

Unit tests:

• packages/core/tests/deploy-api.test.ts
• packages/core/tests/deploy-write-api.test.ts
• packages/core/tests/http.test.ts
• packages/commands/tests/deploy-capacity-write.test.ts
• packages/commands/tests/deploy-legacy-write.test.ts
• packages/commands/tests/deploy-query.test.ts
• packages/commands/tests/deploy-wait-http.test.ts

E2E tests:

• packages/commands/tests/e2e/deploy.e2e.test.ts

Docs/skill references (README.md, README.zh.md, skills/bailian-finetune/*) updated for the new PTU semantics.