fix: pi container repo mount target and npm update permissions

- Add Alembic migration to update built-in pi-agent manifest:
  * repo mount target from /workspace to ~/{{WORKSPACE_NAME}}
  * keep /workspace as compatibility symlink via working_dir
  * update startup chown target to $HOME/$WORKSPACE_NAME
- Pass REPO_NAME and WORKSPACE_NAME to compile_compose from instance_service
- Substitute {{WORKSPACE_NAME}} in manifest mount targets and expose it as
  a container env var so the entrypoint can create the /workspace symlink
- Generate entrypoint workspace symlink from runtime WORKSPACE_NAME env var
- Install npm_global packages into {home_dir}/.npm-global with PATH so the
  non-root container user can update global packages
- Update manifest compiler unit tests for the new behavior

Quality gates:
- pytest tests/unit: 207 passed
- ruff: clean on changed files
- mypy: clean on changed files
- alembic heads: single head

apps/api/alembic/versions/.pi-map.md

@@ -4,7 +4,7 @@ dir: apps/api/alembic/versions
 index: apps/api/alembic/versions/.pi-map.index.md
 
 ## role
-Database schema evolution and versioning management for the API application using Alembic migration scripts.
+Database schema version control and incremental migration management for the API application, tracking the evolution of tables supporting users, SSH keys, projects, git repositories, tool types/instances, config profiles, workspaces, monitoring, notifications, and terminal sessions.
 ## files
 - 0001_initial_schema.py | Defines the initial database schema migration creating five tables (users, ssh_keys, projects, git_repositories, user_configs) with relationships, indexes, and constraints using Alembic. | exp: func:upgrade() → None, call:op.create_table, call:sa.Column, call:sa.String, call:postgresql.UUID, call:sa.DateTime, call:sa.func.now, call:sa.PrimaryKeyConstraint, call:sa.UniqueConstraint, call:op.create_index, call:op.f, call:sa.Text, call:sa.ForeignKeyConstraint, call:sa.Boolean, call:postgresql.JSONB, func:downgrade() → None, call:op.drop_table, call:op.drop_index, call:op.f | dep: alembic, sqlalchemy.dialects, sqlalchemy, postgresql dialect
 - 0002_refresh_tokens.py | Alembic database migration that creates a refresh_tokens table with indexes for user authentication token management | exp: func:upgrade() → None, call:op.get_bind, call:sa.inspect, call:inspector.has_table, call:op.create_table, call:sa.Column, call:postgresql.UUID, call:sa.String, call:sa.DateTime, call:sa.ForeignKeyConstraint, call:sa.PrimaryKeyConstraint, call:sa.UniqueConstraint, call:inspector.get_indexes, call:op.f, call:op.create_index, func:downgrade() → None, call:op.get_bind, call:sa.inspect, call:inspector.has_table, call:inspector.get_indexes, call:op.f, call:op.drop_index, call:op.drop_table | dep: alembic, sqlalchemy.dialects, sqlalchemy, sqlalchemy.dialects.postgresql
@@ -46,6 +46,7 @@ Database schema evolution and versioning management for the API application usin
 - 2026_06_01_add_workspaces.py | Alembic database migration that creates a workspaces table with foreign keys to git_repositories and users, adds indexes, and adds a workspace_id column to tool_instances | exp: func:upgrade() → None, call:op.create_table, call:sa.Column, call:sa.Uuid, call:sa.String, call:sa.ForeignKey, call:sa.DateTime, call:sa.text, call:sa.UniqueConstraint, call:op.create_index, call:op.add_column, func:downgrade() → None, call:op.drop_index, call:op.drop_column, call:op.drop_table | dep: collections.abc, alembic, sqlalchemy
 - 2026_06_13_make_clone_mode_nullable.py | Alembic database migration that makes the `clone_mode` column in `tool_instances` table nullable to support workspace-first cleanup workflow. | exp: func:upgrade() → None, call:op.alter_column, call:sa.String, func:downgrade() → None, call:op.alter_column, call:sa.String | dep: alembic, sqlalchemy
 - 2026_06_14_104415_add_tool_type_home_directory.py | Alembic database migration that adds a `home_directory` column to `tool_types` table and updates template strings to use a configurable workspace path instead of hardcoded `/workspace` | exp: func:upgrade() → None, call:op.add_column, call:sa.Column, call:sa.String, call:op.execute, call:sa.update(tool_types) .where(tool_types.c.compose_template.is_not(None)) .values, call:tool_types.c.compose_template.is_not, call:sa.func.replace, call:sa.update(tool_types) .where(tool_types.c.dockerfile_template.is_not(None)) .values, call:tool_types.c.dockerfile_template.is_not, func:downgrade() → None, call:op.execute, call:sa.update(tool_types) .where(tool_types.c.compose_template.is_not(None)) .values, call:tool_types.c.compose_template.is_not, call:sa.func.replace, call:sa.update(tool_types) .where(tool_types.c.dockerfile_template.is_not(None)) .values, call:tool_types.c.dockerfile_template.is_not, call:op.drop_column | dep: typing, alembic, sqlalchemy.sql, sqlalchemy
+- 2026_06_14_182955_fix_pi_agent_home_directory_mount.py | Alembic database migration that fixes the pi-agent tool definition manifest by changing repo mount target from /workspace to ~/{{WORKSPACE_NAME}}, updating working directory, and adjusting startup script ownership | exp: func:_find_pi_agent_manifest(conn: sa.Connection) → tuple[Union[str, None], Union[dict, None]], call:conn.execute( sa.select(tool_definition_manifests.c.id, tool_definition_manifests.c.manifest) .where(tool_definition_manifests.c.name == "pi-agent") ).fetchone, call:sa.select(tool_definition_manifests.c.id, tool_definition_manifests.c.manifest) .where, call:dict, func:_update_manifest(conn: sa.Connection, manifest_id: str, manifest: dict) → None, call:conn.execute, call:sa.update(tool_definition_manifests) .where(tool_definition_manifests.c.id == manifest_id) .values, func:upgrade() → None, call:op.get_bind, call:_find_pi_agent_manifest, call:manifest.get, call:mount.get, call:manifest.setdefault, call:_update_manifest, func:downgrade() → None, call:op.get_bind, call:_find_pi_agent_manifest, call:manifest.get, call:mount.get, call:manifest.setdefault, call:_update_manifest | dep: typing, alembic, sqlalchemy.sql, sqlalchemy
 - 398082499c30_add_tool_config_fields.py | Alembic database migration that adds five new columns (port_override, start_command, working_directory, environment_variables, volumes) to the tool_configs table with a port range check constraint. | exp: func:upgrade() → None, call:op.add_column, call:sa.Column, call:sa.Integer, call:sa.Text, call:postgresql.JSONB, call:op.create_check_constraint, call:sa.text, func:downgrade() → None, call:op.drop_constraint, call:op.drop_column | dep: alembic, sqlalchemy.dialects, sqlalchemy, sqlalchemy.dialects.postgresql
 - 6fc7bfcf199f_merge_remove_is_builtin_and_add_config_.py | Alembic database migration that merges two parallel revision branches (removing is_builtin and adding config_profiles) into a single history line | exp: func:upgrade() → None, func:downgrade() → None | dep: alembic
 - 86cec91fdb00_merge_profile_resolver_and_workspaces_.py | Alembic database migration that merges two divergent migration branches (profile resolver and workspaces) into a single head | exp: func:upgrade() → None, func:downgrade() → None | dep: alembic
@@ -53,9 +54,9 @@ Database schema evolution and versioning management for the API application usin
 - 8ed7dd80973d_create_config_folders_table.py | Alembic database migration that creates a config_folders table with user-owned configuration folders supporting JSONB file storage and project overrides | exp: func:upgrade() → None, call:op.create_table, call:sa.Column, call:postgresql.UUID, call:sa.text, call:sa.ForeignKey, call:sa.String, call:sa.Text, call:postgresql.JSONB, call:sa.Boolean, call:sa.DateTime, call:sa.UniqueConstraint, call:op.create_index, func:downgrade() → None, call:op.drop_index, call:op.drop_table | dep: alembic, sqlalchemy.dialects, sqlalchemy, sqlalchemy.dialects.postgresql
 - af8512103d67_add_tool_type_fields.py | Alembic database migration that adds new columns (definition_type, dockerfile_template, build_context, readiness_probe) to the tool_types table with a CHECK constraint on definition_type. | exp: func:upgrade() → None, call:op.add_column, call:sa.Column, call:sa.String, call:sa.Text, call:postgresql.JSONB, call:op.create_check_constraint, call:sa.text, func:downgrade() → None, call:op.drop_constraint, call:op.drop_column | dep: alembic, sqlalchemy.dialects, sqlalchemy, sqlalchemy.dialects.postgresql
 - f3d2dc90ba3a_merge_single_interface_and_clone_mode.py | Alembic database migration that merges two prior revisions (single_interface and clone_mode) into a single migration path | exp: func:upgrade() → None, func:downgrade() → None | dep: typing, alembic
-- fc8f1a20cbf6_merge_home_directory_and_pi_agent_mount_.py | Alembic database migration that merges two revision branches by declaring them as down revisions without performing any schema changes. | exp: func:upgrade() → None, func:downgrade() → None | dep: alembic, sqlalchemy
+- fc8f1a20cbf6_merge_home_directory_and_pi_agent_mount_.py | Alembic database migration that merges two divergent migration branches (home directory cleanup and pi agent mount cleanup) into a single revision history | exp: func:upgrade() → None, func:downgrade() → None | dep: alembic
 ## arch
-Sequential and branched migration pattern with merge resolution, using Alembic's revision-based approach with upgrade/downgrade functions, including data migrations, conditional schema changes, and cross-dialect support (PostgreSQL/SQLite).
+Linear and branched Alembic migration history with merge migrations reconciling divergent branches; each migration is an autonomous upgrade/downgrade script using SQLAlchemy operations, with some including data migrations, conditional logic for idempotency, dialect-specific handling (PostgreSQL/SQLite), and direct file-system modifications alongside schema changes.
 ## tags
 column, table, call:op.drop, alembic, downgrade, upgrade, key, call:sa.text
 ## symbols