Upgrade foc-cli to Synapse SDK v1

[snissn]

Summary

• Bump @filoz/synapse-sdk to ^1.0.1 and @filoz/synapse-core to ^0.7.0, with a refreshed cli/bun.lock.
• Await async Piece.calculate in dataset upload and switch findPiece to v1 polling options.
• Read upload cost rates from prep.costs.rates.perMonth.
• Derive wallet summary timeRemaining from v1 runwayInEpochs while preserving the existing output field.
• Update command mocks to v1-only shapes and tighten tests around async piece CID resolution, cost rates, and account summary runway/coverage fields.

Fixes #13
Fixes #14
Fixes #15

Graph

Predecessors: none
Successors: #16

This PR collapses #13-#15 into one mergeable unit because the dependency-only state fails the repo CI build/test gates until the v1 API and mock/test changes are present.

Validation

• bun install --frozen-lockfile
• bun run test — 32 pass, 0 fail
• bunx biome check src tests
• bunx tsc --noEmit
• bun run build
• git diff --check

Release readiness note

NPM latest observed on June 12, 2026:

• @filoz/synapse-sdk: 1.0.1
• @filoz/synapse-core: 0.7.0

No package publish is included in this PR. Calibration smoke validation remains tracked by #16.

[snissn]

Latest validation for PR #17 head 3a2d218:

• GitHub Actions CLI: passing on latest head.
• Local gates: bun install --frozen-lockfile && bun run test && bunx biome check src tests && bunx tsc --noEmit && bun run build && git diff --check passed.
• Calibration smoke for Run calibration smoke validation for Synapse SDK v1 foc-cli #16 passed; details are recorded on Run calibration smoke validation for Synapse SDK v1 foc-cli #16. Uploaded CID bafkzcibeqcad6egqwuynxmfu6jof2lzkfdp65aelknasuautd4mmjgpvujkaq2ytey into dataset 12524; retrieval range check returned 32 bytes.

Internal final review found no blockers. AI reviews were not requested; no repo policy or branch protection requires them for this PR.