feat(session): default JSONL writes to packed rows

examples/acp-agent/packed-chunks.cordis.snapshot.yml

@@ -1,45 +0,0 @@
-# Keyless replay counterpart of packed-chunks.cordis.yml. Patches do not
-# compose across includes, so this applies the packChunks config and the
-# DeepSeek-to-replay swap directly to `cordis.yml`.
-- id: base
-  name: '@cordisjs/plugin-include'
-  config:
-    path: ./cordis.yml
-    patches:
-      - id: llm-deepseek
-        name: '@deepseek-ai/dsh-llm-deepseek'
-        disabled: true
-      - id: sandbox
-        name: '@deepseek-ai/dsh-sandbox-local'
-        config:
-          runnerCommand:
-            - bash
-            - -c
-            - while [ "$1" != "--" ]; do shift; done; shift; exec "$@"
-            - passthrough-runner
-          runnerFailureSignatures:
-            - 'passthrough-runner: profile rejected'
-      - id: acp-agent
-        name: '@deepseek-ai/dsh-acp-demo'
-        config:
-          provider: deepseek
-          model: deepseek-v4-flash
-          persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
-          persistenceCompression: 'none'
-          packChunks: true
-          workspaceContext:
-            maxBytes: 65536
-          persona: |
-            You are a coding assistant powered by the {{model}} model. Your working directory is {{cwd}}. Your bash tool runs under a file sandbox — a `[sandbox: file access denied …]` result is policy, not a command bug.
-
-            Verify your work by running the code or tests. Keep answers brief and factual.
-      - insert:
-          - id: llm-replay
-            name: '@deepseek-ai/dsh-llm-replay'
-            config:
-              providers:
-                - id: deepseek
-                  name: DeepSeek
-                  models:
-                    - id: deepseek-v4-flash
-                    - id: deepseek-v4-pro

examples/acp-agent/packed-chunks.cordis.yml

@@ -1,23 +0,0 @@
-# The packed-chunk-rows overlay: the base tree with the JSONL backend's
-# `packChunks` switched on, so delta-chunk runs persist as packed storage rows.
-# A config patch replaces the whole app config, so unchanged base fields are
-# restated below.
-- id: base
-  name: '@cordisjs/plugin-include'
-  config:
-    path: ./cordis.yml
-    patches:
-      - id: acp-agent
-        name: '@deepseek-ai/dsh-acp-demo'
-        config:
-          provider: deepseek
-          model: deepseek-v4-flash
-          persistenceRoot: !!js process.env.DSH_SNAPSHOT_SESSIONS_ROOT ?? './.sessions'
-          persistenceCompression: !!js "process.env.DSH_SNAPSHOT === undefined ? 'zstd' : 'none'"
-          packChunks: true
-          workspaceContext:
-            maxBytes: 65536
-          persona: |
-            You are a coding assistant powered by the {{model}} model. Your working directory is {{cwd}}. Your bash tool runs under a file sandbox — a `[sandbox: file access denied …]` result is policy, not a command bug.
-
-            Verify your work by running the code or tests. Keep answers brief and factual.

examples/acp-agent/tests/acp.snapshot.ts

@@ -37,7 +37,6 @@ const FS_CONFIG = fileURLToPath(new URL('../fs.cordis.yml', import.meta.url))
 const SESSION_QUERY_CONFIG = fileURLToPath(new URL('../session-query.cordis.yml', import.meta.url))
 const PTY_CONFIG = fileURLToPath(new URL('../pty.cordis.yml', import.meta.url))
 const DEPTH_TWO_CONFIG = fileURLToPath(new URL('../depth-two.cordis.yml', import.meta.url))
-const PACKED_CHUNKS_CONFIG = fileURLToPath(new URL('../packed-chunks.cordis.yml', import.meta.url))
 const SESSION_SANDBOX_ROOT_CONFIG = fileURLToPath(new URL('../session-sandbox-root.cordis.yml', import.meta.url))
 const RETRY_CONFIG = fileURLToPath(new URL('../retry.cordis.yml', import.meta.url))
 const LSP_CONFIG = fileURLToPath(new URL('./lsp.cordis.yml', import.meta.url))
@@ -76,10 +75,10 @@ const SCENARIOS: Scenario[] = [
   // Its prompt and tool-schema sidecars pin the composed header.
   { name: 'text-turn', hasModelTurn: true, recorded: true, pinsHeader: true },
   { name: 'tool-call-turn', hasModelTurn: true, recorded: true },
-  // Authored from the real PACKED_CHUNKS_SOURCE recording under the same app
-  // composition. The contract below pins decoded equality and all three row
-  // kinds; replay additionally proves the assembled app re-packs identically.
-  { name: 'packed-chunks', hasModelTurn: true, recorded: false, configPath: PACKED_CHUNKS_CONFIG },
+  // Authored from the real PACKED_CHUNKS_SOURCE recording under the ordinary
+  // app composition. The contract below pins decoded equality and all three
+  // row kinds; replay additionally proves the assembled app re-packs identically.
+  { name: 'packed-chunks', hasModelTurn: true, recorded: false },
   // The fs overlay only adds the spill stack (the sandboxed filesystem tools
   // live in the base tree), so these scenarios share the default header class.
   {
@@ -282,5 +281,9 @@ it('packed ACP fixture retains every chunk row kind without changing the logical
   })
 
   expect([...new Set(rowTypes)].sort()).toStrictEqual(['reasoning-chunks', 'text-chunks', 'tool-call-chunks'])
-  expect([packed[0], ...packed.slice(1).flatMap(record => decodeStorageRecord(record))]).toStrictEqual(source)
+  const logicalRecords = (records: readonly unknown[]): unknown[] => [
+    records[0],
+    ...records.slice(1).flatMap(record => decodeStorageRecord(record)),
+  ]
+  expect(logicalRecords(packed)).toStrictEqual(logicalRecords(source))
 })