v3.3.0

## What's Changed
* Fix unique-index IN queries falling back to label scans by @xav-db in https://github.com/HelixDB/helix-db/pull/1105
* Fix unified MCP authentication and agent workflow docs by @xav-db in https://github.com/HelixDB/helix-db/pull/1103
* feat(cli): add image version selection and pull policies by @xav-db in https://github.com/HelixDB/helix-db/pull/1104
* feat(sdk): add managed database selection to SDK clients by @Tyagiquamar in https://github.com/HelixDB/helix-db/pull/1096
* fix(dsl): reject negative stream bound literals in Python and Go SDKs by @Tyagiquamar in https://github.com/HelixDB/helix-db/pull/1097
* fix(sdk): reject non-RFC3339 timestamps by @macayu17 in https://github.com/HelixDB/helix-db/pull/1095
* fix(cli): honor docker context precedence and runtime-aware failure hints by @ambikeesshh in https://github.com/HelixDB/helix-db/pull/1091
* Fix workspace CI race and refresh coverage fingerprint by @matthewsanetra in https://github.com/HelixDB/helix-db/pull/1092
* refactor(vector): organize modules by responsibility by @xav-db in https://github.com/HelixDB/helix-db/pull/1084
* fix(cli): handle EOF and invalid email input in metrics full by @siddiqueirshad in https://github.com/HelixDB/helix-db/pull/1085
* Surface planner error codes to embedded callers and classify query failures once by @nkootstra in https://github.com/HelixDB/helix-db/pull/1098
* fix(cli): sanitize docker resource names derived from project names by @ambikeesshh in https://github.com/HelixDB/helix-db/pull/1054
* Fix MinIO image pulls in Docker CI and CLI disk runtime by @xav-db in https://github.com/HelixDB/helix-db/pull/1108
* fix(python-sdk): reject invalid RFC3339 timezone offsets by @macayu17 in https://github.com/HelixDB/helix-db/pull/1107
* Release CLI 3.3.0 and Docker v0.0.6 with tested image publication by @xav-db in https://github.com/HelixDB/helix-db/pull/1111

## New Contributors
* @siddiqueirshad made their first contribution in https://github.com/HelixDB/helix-db/pull/1085
* @nkootstra made their first contribution in https://github.com/HelixDB/helix-db/pull/1098

**Full Changelog**: https://github.com/HelixDB/helix-db/compare/v3.2.0...v3.3.0