Commit 2d3cad0

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Add Postgres extension & SQL streaming

Introduce Postgres extension support and streaming SQL results. Adds pgrx/pgrx-tests to Cargo.toml and a local patch for librocksdb-sys; includes a new docker/pg setup and many kalam-pg extension sources and tests. Backend API changes enable streaming SQL row responses: new helpers/streaming.rs, updates to execute.rs to use raw execution results and stream rows when appropriate, and converter/helper tweaks to support username/role handling. Also minor repo updates (.gitignore /vendor) and various build/runtime scripts for the Postgres extension.

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121 files changed

.gitignore
Cargo.lock
Cargo.toml
backend
- crates
  - kalamdb-api/src/handlers/sql
    - execute.rs
    - helpers
  - kalamdb-core
    - Cargo.toml
    - src
      - app_context.rs
      - jobs
        flush_scheduler.rs
        jobs_manager
        runner.rs
        mod.rs
      - lib.rs
      - pg_executor.rs
      - schema_registry/registry
        core.rs
      - sql/executor
        fast_point_dml.rs
        mod.rs
        sql_executor.rs
  - kalamdb-pg
    - Cargo.toml
    - src
    - tests
      - session_registry.rs
  - kalamdb-raft
    - Cargo.toml
    - src
      - executor
        raft.rs
      - network
        service.rs
    - tests
  - kalamdb-tables/src
    - shared_tables
      - shared_table_provider.rs
    - user_tables
      - user_table_provider.rs
- src
  - lifecycle.rs
- tests/testserver
  - flush
    - test_flush_policy_verification_http.rs
  - subscription
    - test_live_query_updates.rs
docker
- build
  - Dockerfile
  - build-and-test-local.sh
- pg
docs
- Notes.md
- plans
  - 2026-03-21-postgres-remote-mode-implementation-plan.md
kalam-pg
- crates
  - kalam-pg-api
    - src
    - tests
      - request_validation.rs
  - kalam-pg-client
    - Cargo.toml
    - src
      - lib.rs
    - tests
      - connectivity.rs
  - kalam-pg-common/src
  - kalam-pg-embedded
    - Cargo.toml
    - src
      - runtime.rs
    - tests
      - runtime.rs
  - kalam-pg-extension
  - kalam-pg-fdw
    - src
    - tests
  - kalam-pg-types/src
    - pg_type_name.rs
- local_test.sql
nextest.toml
nohup.out
scripts
- test-kalam-pg-extension.sh
specs/026-postgres-extension

`‎.gitignore‎`

-Original file line number
+Diff line change
 /target_cli_smoke_run
 /link/sdks/dart/build
 /link/sdks/dart/.dart_tool
 +/vendor

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