storage(#7638): tinyagents v2.2.0 driver stores, default sqlite backend, classic mode retired

crates/openhuman-core/Cargo.toml

@@ -543,9 +543,9 @@ proptest = "1"
 langfuse = ["tinyagents-harness/langfuse"]
 # Storage drivers for `[storage] url` / `OPENHUMAN_STORAGE_URL` (see the
 # `storage` domain). Memory and plain files are always available.
-# `storage-sqlite` is in the contributor set and the product: the small
-# desktop stores (approvals, devices, notifications, task sources) keep their
-# rows in it by default. `storage-mongodb` is in neither; a cloud build turns
+# `storage-sqlite` is in the contributor set and the product: the default
+# backend, `sqlite:<workspace>/storage`, needs it, so a host without it must
+# name another backend. `storage-mongodb` is in neither; a cloud build turns
 # it on. OS keychain support belongs to openhuman-rpc's `os-keyring` feature,
 # not the core or its storage-driver feature set.
 storage-sqlite = ["tinystoragedrivers/sqlite"]

crates/openhuman-core/src/agent/README.md

@@ -144,8 +144,7 @@ In order:
 9. The runtime commits the turn. `OpenHumanTranscriptCodec`
    ([`session_host/codec.rs`](./session_host/codec.rs)) converts between durable `TranscriptMessage`
    rows and model `Message`s. After the durable commit, the host publishes
-   `ConversationTurnCommitted` for memory ingest, optionally dual-writes
-   the legacy session format (`session_import::live`), and accounts usage
+   `ConversationTurnCommitted` for memory ingest and accounts usage
    against any active goal.
 10. `run_single_with_origin` publishes `AgentTurnCompleted` (or
     `AgentError`) and returns the final text.
@@ -319,7 +318,7 @@ Persistence, setup and RPC:
 | --- | --- |
 | `artifacts/` | Agent-generated artifact storage and the `ai` RPC namespace ([README](artifacts/README.md)) |
 | `session_db/` | `run_ledger` RPC over `tinyagents_session::run_ledger` |
-| `session_import/` | One-time import of legacy session files and the optional live dual-write ([README](session_import/README.md)) |
+| `session_import/` | The `session_import.run` retry of the boot-time legacy-session import, and the agent's key-value store on each turn's `RunContext` ([README](session_import/README.md)) |
 | [`schemas.rs`](./schemas.rs) | The `agent` namespace controllers |
 
 ## Key types and entry points

crates/openhuman-core/src/agent/goals/store.rs

@@ -2,7 +2,7 @@
 //!
 //! **Crate-backed.** The per-thread goal now lives in the vendored `tinyagents`
 //! crate's `graph::goals` KV store
-//! (`<workspace>/tinyagents_store/kv/graph.goals/<hex(thread_id)>.json`), not
+//! (the `graph.goals` namespace of the agent's key-value store), not
 //! the legacy `<workspace>/thread_goals/` file-JSON tree. This module is a thin
 //! adapter for the harness turn loop, agent tools, and post-turn accounting. It forwards each operation to the crate
 //! store, converting the crate
@@ -19,15 +19,11 @@ use std::sync::Arc;
 use tinyagents_graph::goals::store as crate_store;
 use tinyagents_graph::goals::ThreadGoal;
 use tinyagents_harness::store::Store;
-use tinyagents_session::transcript::import::ops::open_session_stores;
 
-/// The store thread goals live in: the current agent's host session store
-/// when one is installed, else the workspace's `tinyagents_store/kv`.
+/// The store thread goals live in: the current agent's key-value store in the
+/// storage backend ([`crate::agent::session_store::stores_for`]).
 pub(crate) fn goals_store(workspace_dir: &Path) -> Arc<dyn Store> {
-    if let Some(stores) = crate::agent::session_store::current() {
-        return stores.kv;
-    }
-    Arc::new(open_session_stores(workspace_dir).kv)
+    crate::agent::session_store::stores_or_ephemeral(workspace_dir).kv
 }
 
 /// Set (create or replace) the thread's goal. A changed objective mints a fresh