Merge master into worktree/preset-user-root-in-package

Overlaps master on the preset e2e, the web scaffold, and the generated
config-catalog triplet; all merged textually, so the catalog is regenerated and
its pairing hashes re-recorded rather than trusted.

apps/cli/config/agent-presets/minimal/agent.cordis.yml

@@ -1,8 +1,9 @@
-# The `minimal` agent preset: a fixed-prompt, two-tool coding surface.
+# The `minimal` agent preset: a fixed-prompt, two-tool coding-agent composition.
 #
-# The persona is the complete system prompt, so global identity, Web surface,
+# The persona is the complete system prompt, so global identity, Web orientation,
 # tool guidance, and later assembly listeners cannot add prompt text. The model
-# composes only the persistent `bash` and `str_replace_editor` tools.
+# composes only the persistent `bash` and `str_replace_editor` tools. Context
+# compaction is deliberately absent.
 
 - id: persona
   name: '@deepseek-ai/dsh-persona'
@@ -41,33 +42,20 @@
           * Please avoid commands that may produce a very large amount of output.
           * Please run long lived commands in the background, e.g. 'sleep 10 &' or start a server in the background.
 
-# The editor requires absolute paths unconditionally.
-- id: str-replace-editor
-  name: '@deepseek-ai/dsh-tool-str-replace-editor'
-  config:
-    maxOutputChars: 16000
-
-# Model capacity comes from routed model metadata; this block states the
-# compaction policy explicitly.
-#
-# `tokenMeter` is deliberately NOT in this realm: the meter stays on the HOST
-# plane, and the row here resolves that one instance. It takes no configuration,
-# keys every fold by Session, and owns the context-meter projection units the
-# browser reads for every session — behind a realm those units would come and go
-# with whichever presets happen to be mounted. What a preset chooses is whether
-# its agent compacts at all, which is `compact-basic` below.
-- id: compaction
+# The bare local filesystem shadows the host's sandboxed provider only for this
+# preset. The editor shares that realm and requires absolute paths.
+- id: filesystem
   name: cordis:group
   group: true
   isolate:
-    compact: true
+    fs: true
   config:
-    - id: compact-basic
-      name: '@deepseek-ai/dsh-compact-basic'
+    - id: fs-local
+      name: '@deepseek-ai/dsh-fs-local'
       config:
-        thresholdRatio: 0.8
-        retainTokens: 20480
-        summarizationProvider: ''
-        summarizationModel: ''
-        maxTokens: 8192
-        compactionRetries: 1
+        cwd: !!js process.env.DSH_CWD ?? process.cwd()
+
+    - id: str-replace-editor
+      name: '@deepseek-ai/dsh-tool-str-replace-editor'
+      config:
+        maxOutputChars: 16000