Module data_dir 

Compatibility shim around agentmux_common::DataPaths.

Historically the launcher computed its own paths via the launcher-local resolve_paths() function. After the data-dir unification (see docs/specs/SPEC_DATA_DIR_UNIFICATION_2026-05-05.md and PR #695), path resolution is centralized in agentmux_common::DataPaths. This module keeps the launcher’s existing public API surface (DataPaths struct with 4 fields, resolve_paths(), ensure_dirs()) so call sites in main.rs, diag.rs, srv_spawner.rs etc. don’t need to be rewritten — they see the same shape, populated from the common implementation.

Field mapping:

• launcher.data_dir = common.data_dir
• launcher.config_dir = common.config_dir
• launcher.user_home_dir = common.home_dir (the agentmux root, e.g. ~/.agentmux/, where config.toml lives)
• launcher.portable_root = exe_dir when mode == Portable, else None

The launcher continues to use these field names internally; the env vars it passes to host + srv are switched in main.rs to the canonical AGENTMUX_* names emitted by DataPaths::to_env_vars.

Structs

DataPaths

Resolved per-instance paths. Compat shape — see module doc.

Functions

ensure_dirs

Create every directory the launcher + srv expect to exist. Idempotent. Delegates to the common implementation.

launcher_saga_log_path

Canonical path for the launcher saga log (<data-dir>/db/launcher-sagas.db). Performs a one-shot back- compat migration: launcher releases prior to this change wrote the saga log directly under <data-dir>/launcher-sagas.db (with srv DBs alongside in <data-dir>/db/, an inconsistency flagged by AUDIT_SQLITE_SYSTEMS §8.3). If only the legacy path exists, move it into db/.

launcher_saga_log_path_read_only

Read-only resolver for the launcher saga log path. Returns whichever location actually holds the data: the canonical <data-dir>/db/launcher-sagas.db if present, otherwise the legacy <data-dir>/launcher-sagas.db if THAT exists, otherwise the canonical path (for the fresh-install case).

resolve_paths

Resolve all paths from the launcher’s vantage point.