diff --git a/PostgreSQL/build_rdbms_01/Readme.md b/PostgreSQL/build_rdbms_01/Readme.md
index da317d3..6d36213 100644
--- a/PostgreSQL/build_rdbms_01/Readme.md
+++ b/PostgreSQL/build_rdbms_01/Readme.md
@@ -26,6 +26,7 @@ The orchestrator runs the installers in this order:
 6. pg_stat_statements
 7. pg_repack
 8. pg_stat_monitor
+9. pgvector
 
 After a successful run, the orchestrator:
 
@@ -47,9 +48,10 @@ Each component can also be installed independently. The PostgreSQL installation
 ./install_pg_stat_statements.sh 18.6
 ./install_pg_repack.sh 18.6
 ./install_pg_stat_monitor.sh 18.6
+./install_pgvector.sh 18.6
 ```
 
-`install_postgresql.sh` recreates both the staging directory and the versioned PostgreSQL prefix before downloading sources. Extension installers recreate only the staging directory and preserve the PostgreSQL prefix.
+All source downloads, extracted source trees, and build workspaces use the `tmp/` directory alongside the scripts by default. `install_postgresql.sh` recreates that staging directory and the versioned PostgreSQL prefix before downloading sources. Each extension installer recreates only the staging directory and preserves the PostgreSQL prefix.
 
 ## Script descriptions
 
@@ -94,6 +96,10 @@ Builds and installs the `pg_repack` extension and its `pg_repack` command-line u
 
 Builds and installs Percona's `pg_stat_monitor` extension.
 
+### `install_pgvector.sh`
+
+Builds and installs pgvector against the selected PostgreSQL installation.
+
 ### `install_common.sh`
 
 Shared helper functions used by the installers, including:
@@ -112,7 +118,7 @@ The following environment variables can override defaults:
 | Variable | Default | Purpose |
 | --- | --- | --- |
 | `POSTGRES_ROOT` | `/app/postgres/rdbms` | Root directory for versioned PostgreSQL installations |
-| `STAGING_DIR` | `/app/staging_area/copilot/tmp` | Temporary source and build directory |
+| `STAGING_DIR` | `<script directory>/tmp` | Temporary source downloads, extracted source, and build directory |
 | `JOBS` | `nproc` result | Parallel build job count |
 | `CONFIG_FILE` | unset | PostgreSQL configuration file to update |
 | `PG_CRON_TAG` | Latest compatible release/tag | pg_cron source tag |
@@ -121,6 +127,7 @@ The following environment variables can override defaults:
 | `SET_USER_TAG` | Latest release/tag | set_user source tag |
 | `PG_REPACK_TAG` | Latest release/tag | pg_repack source tag |
 | `PG_STAT_MONITOR_TAG` | Latest release/tag | pg_stat_monitor source tag |
+| `PGVECTOR_TAG` | Latest release/tag | pgvector source tag |
 
 Repository variables can also be overridden when using a custom mirror:
 
@@ -131,6 +138,7 @@ PGAUDIT_REPOSITORY=owner/repository
 SET_USER_REPOSITORY=owner/repository
 PG_REPACK_REPOSITORY=owner/repository
 PG_STAT_MONITOR_REPOSITORY=owner/repository
+PGVECTOR_REPOSITORY=owner/repository
 ```
 
 Example:
diff --git a/PostgreSQL/build_rdbms_01/install_pg_cron.sh b/PostgreSQL/build_rdbms_01/install_pg_cron.sh
index 4c05c12..eca8d1b 100644
--- a/PostgreSQL/build_rdbms_01/install_pg_cron.sh
+++ b/PostgreSQL/build_rdbms_01/install_pg_cron.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly PG_CRON_REPOSITORY="${PG_CRON_REPOSITORY:-citusdata/pg_cron}"
 
diff --git a/PostgreSQL/build_rdbms_01/install_pg_repack.sh b/PostgreSQL/build_rdbms_01/install_pg_repack.sh
index 4c24796..6a66bf7 100644
--- a/PostgreSQL/build_rdbms_01/install_pg_repack.sh
+++ b/PostgreSQL/build_rdbms_01/install_pg_repack.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly PG_REPACK_REPOSITORY="${PG_REPACK_REPOSITORY:-reorg/pg_repack}"
 
diff --git a/PostgreSQL/build_rdbms_01/install_pg_stat_monitor.sh b/PostgreSQL/build_rdbms_01/install_pg_stat_monitor.sh
index b41f768..172f779 100644
--- a/PostgreSQL/build_rdbms_01/install_pg_stat_monitor.sh
+++ b/PostgreSQL/build_rdbms_01/install_pg_stat_monitor.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly PG_STAT_MONITOR_REPOSITORY="${PG_STAT_MONITOR_REPOSITORY:-percona/pg_stat_monitor}"
 
diff --git a/PostgreSQL/build_rdbms_01/install_pg_stat_statements.sh b/PostgreSQL/build_rdbms_01/install_pg_stat_statements.sh
index a7415b5..f558d85 100644
--- a/PostgreSQL/build_rdbms_01/install_pg_stat_statements.sh
+++ b/PostgreSQL/build_rdbms_01/install_pg_stat_statements.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 
 [[ $# -eq 1 ]] || die "Usage: $0 <postgresql-version>"
diff --git a/PostgreSQL/build_rdbms_01/install_pgaudit.sh b/PostgreSQL/build_rdbms_01/install_pgaudit.sh
index be2e7c4..fe82f32 100644
--- a/PostgreSQL/build_rdbms_01/install_pgaudit.sh
+++ b/PostgreSQL/build_rdbms_01/install_pgaudit.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly PGAUDIT_REPOSITORY="${PGAUDIT_REPOSITORY:-pgaudit/pgaudit}"
 
diff --git a/PostgreSQL/build_rdbms_01/install_pgvector.sh b/PostgreSQL/build_rdbms_01/install_pgvector.sh
new file mode 100644
index 0000000..63b93bc
--- /dev/null
+++ b/PostgreSQL/build_rdbms_01/install_pgvector.sh
@@ -0,0 +1,34 @@
+#!/usr/bin/env bash
+
+set -Eeuo pipefail
+
+SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+# shellcheck source=install_common.sh
+source "$SCRIPT_DIR/install_common.sh"
+
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
+readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
+readonly PGVECTOR_REPOSITORY="${PGVECTOR_REPOSITORY:-pgvector/pgvector}"
+
+[[ $# -eq 1 ]] || die "Usage: $0 <postgresql-version>"
+readonly POSTGRES_VERSION="$1"
+validate_postgresql_version "$POSTGRES_VERSION"
+require_tools curl tar make
+readonly PREFIX="$POSTGRES_ROOT/$POSTGRES_VERSION"
+readonly PG_CONFIG="$PREFIX/bin/pg_config"
+require_postgresql_installation "$PREFIX"
+reset_staging_dir "$STAGING_DIR"
+
+readonly PGVECTOR_TAG="${PGVECTOR_TAG:-$(latest_tag "$PGVECTOR_REPOSITORY")}"
+[[ -n "$PGVECTOR_TAG" ]] || die "could not determine the latest pgvector release"
+readonly PGVECTOR_VERSION="${PGVECTOR_TAG#v}"
+readonly PGVECTOR_DIR="$STAGING_DIR/pgvector-$PGVECTOR_VERSION"
+
+printf 'Building pgvector %s\n' "$PGVECTOR_TAG"
+download_source "$STAGING_DIR" "$PGVECTOR_REPOSITORY" "$PGVECTOR_TAG" \
+  "pgvector-$PGVECTOR_VERSION.tar.gz" "$PGVECTOR_DIR"
+cd "$PGVECTOR_DIR"
+make -j"${JOBS:-$(nproc)}" PG_CONFIG="$PG_CONFIG"
+make install PG_CONFIG="$PG_CONFIG"
+test -f "$PREFIX/lib/vector.so"
+test -f "$PREFIX/share/extension/vector.control"
diff --git a/PostgreSQL/build_rdbms_01/install_postgresql.sh b/PostgreSQL/build_rdbms_01/install_postgresql.sh
index 2f968b3..77bc294 100644
--- a/PostgreSQL/build_rdbms_01/install_postgresql.sh
+++ b/PostgreSQL/build_rdbms_01/install_postgresql.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 
 [[ $# -eq 1 ]] || die "Usage: $0 <postgresql-version>"
diff --git a/PostgreSQL/build_rdbms_01/install_postgresql_extensions.sh b/PostgreSQL/build_rdbms_01/install_postgresql_extensions.sh
index f0a9a66..cc2c802 100644
--- a/PostgreSQL/build_rdbms_01/install_postgresql_extensions.sh
+++ b/PostgreSQL/build_rdbms_01/install_postgresql_extensions.sh
@@ -26,6 +26,7 @@ printf 'Invocation directory: %s\n' "$INVOCATION_DIR"
 "$SCRIPT_DIR/install_pg_stat_statements.sh" "$POSTGRES_VERSION"
 "$SCRIPT_DIR/install_pg_repack.sh" "$POSTGRES_VERSION"
 "$SCRIPT_DIR/install_pg_stat_monitor.sh" "$POSTGRES_VERSION"
+"$SCRIPT_DIR/install_pgvector.sh" "$POSTGRES_VERSION"
 
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly PREFIX="$POSTGRES_ROOT/$POSTGRES_VERSION"
@@ -80,6 +81,7 @@ printf '  set_user: %s\n' "$(extension_version set_user)"
 printf '  pg_stat_statements: %s\n' "$(extension_version pg_stat_statements)"
 printf '  pg_repack: %s\n' "$(extension_version pg_repack)"
 printf '  pg_stat_monitor: %s\n' "$(extension_version pg_stat_monitor)"
+printf '  pgvector: %s\n' "$(extension_version vector)"
 printf "  shared_preload_libraries = '%s'\n" "$SHARED_PRELOAD_LIBRARIES"
 
 rm -f -- "$ENGINE_ARCHIVE"
diff --git a/PostgreSQL/build_rdbms_01/install_set_user.sh b/PostgreSQL/build_rdbms_01/install_set_user.sh
index 01c6d55..5738a63 100644
--- a/PostgreSQL/build_rdbms_01/install_set_user.sh
+++ b/PostgreSQL/build_rdbms_01/install_set_user.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly SET_USER_REPOSITORY="${SET_USER_REPOSITORY:-pgaudit/set_user}"
 
diff --git a/PostgreSQL/build_rdbms_01/install_timescaledb.sh b/PostgreSQL/build_rdbms_01/install_timescaledb.sh
index 7379d0f..d488e5f 100644
--- a/PostgreSQL/build_rdbms_01/install_timescaledb.sh
+++ b/PostgreSQL/build_rdbms_01/install_timescaledb.sh
@@ -6,7 +6,7 @@ SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
 # shellcheck source=install_common.sh
 source "$SCRIPT_DIR/install_common.sh"
 
-readonly STAGING_DIR="${STAGING_DIR:-/app/staging_area/copilot/tmp}"
+readonly STAGING_DIR="${STAGING_DIR:-$SCRIPT_DIR/tmp}"
 readonly POSTGRES_ROOT="${POSTGRES_ROOT:-/app/postgres/rdbms}"
 readonly TIMESCALEDB_REPOSITORY="${TIMESCALEDB_REPOSITORY:-timescale/timescaledb}"
 
diff --git a/PostgreSQL/build_rdbms_01/resume.txt b/PostgreSQL/build_rdbms_01/resume.txt
deleted file mode 100644
index a7afe9e..0000000
--- a/PostgreSQL/build_rdbms_01/resume.txt
+++ /dev/null
@@ -1 +0,0 @@
-copilot --resume=810fde45-db5c-4a88-8abf-550ae7a485e4