chore(release): prepare manual SDK version bumps

[ducnmm]

Summary

Prepare every changed SDK package for the team's manual-version release flow before promoting dev.

• bump @mysten-incubation/memwal from 0.1.1 to 0.1.2
• bump Python memwal from 0.1.6 to 0.1.7, including __version__
• bump @mysten-incubation/memwal-mcp from 0.0.6 to 0.0.7
• keep OpenClaw at 0.0.5 because it has no package changes in this promotion
• synchronize package changelogs, public docs changelogs, and existing monorepo plugin/marketplace version references
• stop future MCP npm tarballs from bundling a duplicate marketplace plugin; the plugin-only handoff lives in CommandOSSLabs/walrus-memory-mcp-plugin
• add a release consistency verifier

The release notes cover all package changes since staging while remaining intentionally concise: offline mocks, idempotent remember retries, manual recall/base64 fixes, Zod 3/4 compatibility, live MCP credential refresh/account isolation, and bounded restore truncation.

Validation

• release consistency verifier passed
• TypeScript SDK typecheck/build and 31/31 tests passed
• MCP typecheck/build and 10/10 tests passed
• MCP dry-run tarball: 38 runtime files, no plugin/ copy
• Python legacy suite: 95/95 passed
• Python focused client/mock suite: 47/47 passed
• Python 0.1.7 sdist/wheel built; wheel contains memwal/mock.py
• TypeScript SDK dry-run tarball reports 0.1.2
• git diff --check passed

Release ordering

Merge this PR into dev before refreshing the dev → staging promotion. The promotion must rerun CI and receive exact-head approval after this commit is included.

[ducnmm]

@harrymove-ctrl Please review exact current HEAD 9b7a97a2. This is the manual version/changelog gate requested before refreshing PR #612. Please verify the concise release coverage and approve only this exact head if clean.