[samgbafa]

Summary

Release 1.21.8: version bump (tinycloud-node-server/Cargo.toml and the three tinycloud-node lockfile entries) and the changelog section.

Contents since 1.21.7:

• SQL: a request that writes is one transaction (feat(sql): a multi-statement request is one transaction (TC-1491, 1a part A) #384).
• SQL: bounded reads of stored database artifacts (perf(sql): bounded artifact reads, no whole-row load (TC-822) #376, TC-822/TC-1491: follow-ups to #376 (bounded reads) #383).
• SQL block store: contract types, configuration and the m20261021_000000_sql_store_manifest migration, two empty tables (chore(TC-1491): SQL block-store contract types, config and manifest migration (slice 0) #377).
• Manage storage link points at the account storage page (fix(quota): Manage storage link points at the account storage page (TC-848) #398).
• Deploy workflow: Phala deploys require the pinned production OS image (Fail the Phala deploy unless the CVM runs the pinned production OS image #403).
• Documentation: compose-only changes ship as a release (docs(releasing): a compose-only change ships as a release; reading the dense promote watch (TC-950) #401). Tests remove their temporary directories (tests: remove temporary directories when each test ends #405).

One database migration. Rolling back below 1.21.8 needs DELETE FROM seaql_migrations WHERE version = 'm20261021_000000_sql_store_manifest'; first (the changelog says so).

Details: TC-1491, TC-822, TC-848, TC-950, TC-1630, TC-1748

[samgbafa]

APPROVE: see TC-1491 (reviewed exact head df36f39)