diff --git a/crates/jp_config/src/conversation.rs b/crates/jp_config/src/conversation.rs
index 1237ee853..00cfc8982 100644
--- a/crates/jp_config/src/conversation.rs
+++ b/crates/jp_config/src/conversation.rs
@@ -29,7 +29,7 @@ use crate::{
     internal::merge::{map_with_strategy, vec_with_strategy},
     partial::{ToPartial, partial_opt},
     types::{
-        map::{MergeableMap, map_to_mergeable_partial},
+        map::{MergeableMap, map_to_partial_per_key},
         vec::{MergeableVec, MergedVec, vec_to_mergeable_partial},
     },
     validate::Validator,
@@ -201,7 +201,9 @@ impl ToPartial for ConversationConfig {
             tools: self.tools.to_partial(),
             compaction: self.compaction.to_partial(),
             attachments: vec_to_mergeable_partial(&self.attachments),
-            labels: map_to_mergeable_partial(self.labels.iter()),
+            // Per key rather than `replace`: a label rule the workspace config
+            // gained after this conversation was created still reaches it.
+            labels: map_to_partial_per_key(self.labels.iter()),
             inquiry: self.inquiry.to_partial(),
             start_local: partial_opt(&self.start_local, defaults.start_local),
             default_id: self.default_id.clone(),
diff --git a/crates/jp_config/src/conversation/compaction.rs b/crates/jp_config/src/conversation/compaction.rs
index 0940818ea..3fae5201b 100644
--- a/crates/jp_config/src/conversation/compaction.rs
+++ b/crates/jp_config/src/conversation/compaction.rs
@@ -87,23 +87,16 @@ impl AssignKeyValue for PartialCompactionConfig {
 impl PartialConfigDelta for PartialCompactionConfig {
     fn delta(&self, next: Self) -> Self {
         Self {
-            // Not `delta_mergeable_vec`, which would say `replace` for any
-            // difference: this field's partial is a bare `MergeableVec`, so an
-            // empty one is both "the user said nothing about rules" and "the
-            // user asked for no rules". A sparse partial (a `--model` override,
-            // say) carries the empty one, and replacing with it would record
-            // zero rules the user never asked for, making a later
-            // `jp conversation compact` a no-op.
-            //
-            // Telling the two apart needs the field's partial to be an
-            // `Option<MergeableVec<_>>`, as every converted list field has,
-            // where `None` is absent and `Some([])` is a deliberate empty.
-            rules: {
-                next.rules
-                    .into_iter()
-                    .filter(|v| !self.rules.contains(v))
-                    .collect::<Vec<_>>()
-                    .into()
+            // An empty `rules` says nothing about rules rather than asking for
+            // none: `fill_from` substitutes the built-in defaults for it, so
+            // that is what the config language already means by an empty list.
+            // Every sparse partial reaching this delta carries one, and
+            // replacing with it would record zero rules the user never asked
+            // for, making a later `jp conversation compact` do nothing.
+            rules: if next.rules.is_empty() {
+                MergeableVec::default()
+            } else {
+                crate::delta::delta_mergeable_vec(&self.rules, next.rules)
             },
         }
     }
diff --git a/crates/jp_config/src/delta_law_tests.rs b/crates/jp_config/src/delta_law_tests.rs
index 24dcd5a67..b9624362b 100644
--- a/crates/jp_config/src/delta_law_tests.rs
+++ b/crates/jp_config/src/delta_law_tests.rs
@@ -79,31 +79,6 @@ fn assert_law(before: &[&str], after: &[&str]) {
     );
 }
 
-/// Fields whose clear is known not to survive a fold, and why.
-///
-/// `conversation.compaction.rules` keeps its rules in a bare `MergeableVec`, so
-/// an empty one cannot say whether the user asked for no rules or said nothing
-/// about them.
-/// A delta that replaced on any difference would record zero rules from any
-/// sparse partial that reached it, which is how it was found: routing it
-/// through [`delta_mergeable_vec`] wrote `replace` with an empty list into 37
-/// snapshots and appended an event that should not exist.
-/// Reaching it needs the partial to be an `Option<MergeableVec<_>>`, as every
-/// converted list field has.
-///
-/// `model.parameters.other` is the catch-all arm of its own key-value dispatch,
-/// so `parameters.other` names a key *inside* the map rather than the map
-/// itself, and clearing removes an entry that was never there.
-/// Reaching the whole field needs a path vocabulary that can say "this map"
-/// where the map is also the fallback.
-const CLEAR_NOT_RECORDED: &[&str] = &[
-    "conversation.compaction.rules",
-    "assistant.model.parameters.other",
-    "style.reasoning.summary_model.parameters.other",
-    "conversation.inquiry.assistant.model.parameters.other",
-    "conversation.title.generate.model.parameters.other",
-];
-
 /// Set `path` to whichever of a few generic values it accepts.
 ///
 /// A field has to hold something before clearing it proves anything, and there
@@ -229,9 +204,7 @@ fn clearing_any_field_survives_a_fold() {
         }
         folded.merge(&(), delta).expect("folding cannot fail");
 
-        if crate::util::build(folded).ok().as_ref() != Some(&expected)
-            && !CLEAR_NOT_RECORDED.contains(&path.as_str())
-        {
+        if crate::util::build(folded).ok().as_ref() != Some(&expected) {
             lost.push(path);
         }
     }
diff --git a/crates/jp_config/src/lib_tests.rs b/crates/jp_config/src/lib_tests.rs
index d09a01057..70bb8e713 100644
--- a/crates/jp_config/src/lib_tests.rs
+++ b/crates/jp_config/src/lib_tests.rs
@@ -682,6 +682,43 @@ fn a_server_added_to_the_workspace_reaches_an_existing_conversation() {
     );
 }
 
+/// A label rule only the workspace config declares reaches an existing
+/// conversation, the same way a server or a tool does.
+#[test]
+fn a_label_added_to_the_workspace_reaches_an_existing_conversation() {
+    use schematic::PartialConfig as _;
+
+    use crate::conversation::label::LabelConfig;
+
+    // The conversation was created knowing only `topic`.
+    let mut conversation = AppConfig::new_test();
+    conversation
+        .conversation
+        .labels
+        .insert("topic".to_owned(), LabelConfig::Static("rust".to_owned()));
+
+    // The workspace config has since gained `area`.
+    let mut files = PartialAppConfig::new_test();
+    files.conversation.labels.insert(
+        "area".to_owned(),
+        LabelConfig::Static("config".to_owned()).to_partial(),
+    );
+
+    files
+        .merge(&(), conversation.to_partial())
+        .expect("merging cannot fail");
+    let resolved = crate::util::build(files).expect("valid config");
+
+    assert!(
+        resolved.conversation.labels.contains_key("area"),
+        "a label only the files declare survives the conversation layer"
+    );
+    assert!(
+        resolved.conversation.labels.contains_key("topic"),
+        "the conversation's own label survives too"
+    );
+}
+
 /// A union that names an expanded form contributes both the shorthand path and
 /// the expanded keys; a union of distinct values contributes only its path.
 ///
diff --git a/crates/jp_config/src/types/map.rs b/crates/jp_config/src/types/map.rs
index d490bb6c8..d69e8976d 100644
--- a/crates/jp_config/src/types/map.rs
+++ b/crates/jp_config/src/types/map.rs
@@ -164,24 +164,6 @@ impl<T> FillDefaults for MergeableMap<T> {
     }
 }
 
-/// Convert a resolved map to a `MergeableMap<T::Partial>` with replace
-/// strategy.
-///
-/// Used by `ToPartial` impls for fields whose finalized type is a plain map but
-/// whose partial is a [`MergeableMap`].
-pub fn map_to_mergeable_partial<'a, T: ToPartial + 'a>(
-    entries: impl IntoIterator<Item = (&'a String, &'a T)>,
-) -> MergeableMap<T::Partial> {
-    MergeableMap::Merged(MergedMap {
-        value: entries
-            .into_iter()
-            .map(|(k, v)| (k.clone(), v.to_partial()))
-            .collect(),
-        strategy: Some(MergedMapStrategy::Replace),
-        discard_when_merged: false,
-    })
-}
-
 /// Convert a resolved map to a `MergeableMap<T::Partial>` that merges per key.
 ///
 /// Used by `ToPartial` impls for a map that should still take an entry a later
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_chat_completion_stream__conversation_stream.snap
index 8a1170af6..3d7f3660b 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_fable_5_forced_tool_soft_forces__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_fable_5_forced_tool_soft_forces__conversation_stream.snap
index 0847dd23f..a5e46fd91 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_fable_5_forced_tool_soft_forces__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_fable_5_forced_tool_soft_forces__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_image_attachment__conversation_stream.snap
index a36aa7d0d..e1038c49a 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_multi_turn_conversation__conversation_stream.snap
index 94f492ae3..f54dda974 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_adaptive_thinking__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_adaptive_thinking__conversation_stream.snap
index f9633e2d5..59b4bf690 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_adaptive_thinking__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_adaptive_thinking__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_max_effort__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_max_effort__conversation_stream.snap
index 71730ed84..2112b678f 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_max_effort__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_opus_4_6_max_effort__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_redacted_thinking__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_redacted_thinking__conversation_stream.snap
index a731ab036..44534b079 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_redacted_thinking__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_redacted_thinking__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_request_chaining__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_request_chaining__conversation_stream.snap
index 856232174..0a90ac1b7 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_request_chaining__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_request_chaining__conversation_stream.snap
@@ -89,11 +89,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_structured_output__conversation_stream.snap
index c4eeed12c..166e538ed 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_auto__conversation_stream.snap
index 9eb1d2e60..d842e7001 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_function__conversation_stream.snap
index 7f63994ea..6b08a6f46 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_reasoning__conversation_stream.snap
index df8edd445..3fbff0297 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_no_reasoning__conversation_stream.snap
index 384f1dc62..3e6504899 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_reasoning__conversation_stream.snap
index 712f6c39d..ca22143dd 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_stream__conversation_stream.snap
index 88d09e21d..f8b1b0dd2 100644
--- a/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/anthropic/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_chat_completion_stream__conversation_stream.snap
index a48d34c93..397a022f4 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_multi_turn_conversation__conversation_stream.snap
index d807034a3..44a55fc27 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_structured_output__conversation_stream.snap
index 508a63831..b5d181dca 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_auto__conversation_stream.snap
index b891b269a..c9b82d54f 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_function__conversation_stream.snap
index 86b49c529..63ee07487 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_reasoning__conversation_stream.snap
index f4502e382..8792bde8c 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_no_reasoning__conversation_stream.snap
index 5d7558f92..72c2a5883 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_reasoning__conversation_stream.snap
index 6111e7470..0e649e1ce 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_stream__conversation_stream.snap
index 1658bc5ba..034fe7ce4 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_auto_omits_effort__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_auto_omits_effort__conversation_stream.snap
index 11c4579ad..036eef0e5 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_auto_omits_effort__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_auto_omits_effort__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_off_sends_none__conversation_stream.snap b/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_off_sends_none__conversation_stream.snap
index 21729e1d0..e30199519 100644
--- a/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_off_sends_none__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/cerebras/test_unknown_model_off_sends_none__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_chat_completion_stream__conversation_stream.snap
index c68a45405..b0cd089eb 100644
--- a/crates/jp_llm/tests/fixtures/google/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_gemini_3_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_gemini_3_reasoning__conversation_stream.snap
index 736daac43..9dd02b94c 100644
--- a/crates/jp_llm/tests/fixtures/google/test_gemini_3_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_gemini_3_reasoning__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_image_attachment__conversation_stream.snap
index 488e5b697..c61cc9a3a 100644
--- a/crates/jp_llm/tests/fixtures/google/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_multi_turn_conversation__conversation_stream.snap
index deaca1736..71164989d 100644
--- a/crates/jp_llm/tests/fixtures/google/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_structured_output__conversation_stream.snap
index 89d9952f7..53ab1ffba 100644
--- a/crates/jp_llm/tests/fixtures/google/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_auto__conversation_stream.snap
index 2e1628860..7631cfa53 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_function__conversation_stream.snap
index a3e9ca598..1cb58fd7b 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_reasoning__conversation_stream.snap
index 4c0339f8a..504b8acd6 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_required_no_reasoning__conversation_stream.snap
index 442495cfd..a9ab53137 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_required_reasoning__conversation_stream.snap
index 44e5ba8d2..de0b689d1 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_tool_call_stream__conversation_stream.snap
index eb1f6b2f6..10dcb8301 100644
--- a/crates/jp_llm/tests/fixtures/google/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/google/test_unknown_model_inferred_thinking_level__conversation_stream.snap b/crates/jp_llm/tests/fixtures/google/test_unknown_model_inferred_thinking_level__conversation_stream.snap
index b63e2f173..74461a35d 100644
--- a/crates/jp_llm/tests/fixtures/google/test_unknown_model_inferred_thinking_level__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/google/test_unknown_model_inferred_thinking_level__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_chat_completion_stream__conversation_stream.snap
index 31f486d86..698d3c865 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_image_attachment__conversation_stream.snap
index f75e68d04..3046d1d52 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_multi_turn_conversation__conversation_stream.snap
index 914f96b8f..e46602361 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_structured_output__conversation_stream.snap
index 69b2cad7c..f65d45e5a 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_auto__conversation_stream.snap
index 14858b3e8..c09eafd2b 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_function__conversation_stream.snap
index 7c58c15db..3e18243ee 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_reasoning__conversation_stream.snap
index 1e71defd4..6cf9c697a 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_no_reasoning__conversation_stream.snap
index 6d9d454f7..bb769b3e3 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_reasoning__conversation_stream.snap
index bf36a9988..506d431dc 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_stream__conversation_stream.snap
index 82517ff1d..64938c397 100644
--- a/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/llamacpp/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_chat_completion_stream__conversation_stream.snap
index 780be5070..2374f4679 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_image_attachment__conversation_stream.snap
index 4adf26192..dfe62c83d 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_multi_turn_conversation__conversation_stream.snap
index 6034df11e..8808f8f38 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/ollama/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_structured_output__conversation_stream.snap
index a26d90845..01b7b307d 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
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-      "labels": {
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-        "strategy": "replace",
-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_auto__conversation_stream.snap
index 4867357e3..8fc03d46b 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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         "discard_when_merged": false
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-      "labels": {
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-        "strategy": "replace",
-        "discard_when_merged": false
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     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_function__conversation_stream.snap
index 42012d126..70f6800e7 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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         "discard_when_merged": false
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-        "strategy": "replace",
-        "discard_when_merged": false
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       "start_local": false
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     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_reasoning__conversation_stream.snap
index 4ec7fac72..1fe29738f 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
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-      "labels": {
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-        "strategy": "replace",
-        "discard_when_merged": false
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     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_no_reasoning__conversation_stream.snap
index 7d417e4b4..5db07b580 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
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     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_reasoning__conversation_stream.snap
index 11ef56200..e34bb1471 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
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-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
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       "start_local": false
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     "style": {
diff --git a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_stream__conversation_stream.snap
index 9aa59033c..ce7653f8b 100644
--- a/crates/jp_llm/tests/fixtures/ollama/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/ollama/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
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-        "strategy": "replace",
-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_chat_completion_stream__conversation_stream.snap
index 5b81f8bb9..d141f34b5 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
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-        "strategy": "replace",
-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_cache_off_sends_explicit_optout__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_cache_off_sends_explicit_optout__conversation_stream.snap
index dd2581a7e..ea4f9beb1 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_cache_off_sends_explicit_optout__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_cache_off_sends_explicit_optout__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_pro_reasoning_and_explicit_caching__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_pro_reasoning_and_explicit_caching__conversation_stream.snap
index 00c365278..fa2b03c87 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_pro_reasoning_and_explicit_caching__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_pro_reasoning_and_explicit_caching__conversation_stream.snap
@@ -88,11 +88,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_prompt_cache_read_after_write__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_prompt_cache_read_after_write__conversation_stream.snap
index 2fcabc42c..bd935df74 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_prompt_cache_read_after_write__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_gpt_5_6_prompt_cache_read_after_write__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_image_attachment__conversation_stream.snap
index 8c01c530f..ed2ad9ea8 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_multi_turn_conversation__conversation_stream.snap
index 8b3b7828e..38dbe41e4 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_reasoning_history_replayed_to_reasoning_unsupported_model__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_reasoning_history_replayed_to_reasoning_unsupported_model__conversation_stream.snap
index 1c778907c..26a5f4908 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_reasoning_history_replayed_to_reasoning_unsupported_model__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_reasoning_history_replayed_to_reasoning_unsupported_model__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_structured_output__conversation_stream.snap
index ab93da729..8e571142b 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_auto__conversation_stream.snap
index d6f9d86a6..daa5499b0 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_function__conversation_stream.snap
index 7974cfbe7..7bef856b4 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_reasoning__conversation_stream.snap
index 6345cf600..e62eff582 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_no_reasoning__conversation_stream.snap
index 851496e48..60b794df0 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_reasoning__conversation_stream.snap
index a0bc24d49..0afc9aeb6 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openai/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openai/test_tool_call_stream__conversation_stream.snap
index 43f756e0c..de167a63b 100644
--- a/crates/jp_llm/tests/fixtures/openai/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openai/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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-        "strategy": "replace",
-        "discard_when_merged": false
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/anthropic_test_sub_provider_event_metadata__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/anthropic_test_sub_provider_event_metadata__conversation_stream.snap
index 76133ae5a..0c59ece25 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/anthropic_test_sub_provider_event_metadata__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/anthropic_test_sub_provider_event_metadata__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/google_test_sub_provider_event_metadata__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/google_test_sub_provider_event_metadata__conversation_stream.snap
index c426889ba..109aed8f7 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/google_test_sub_provider_event_metadata__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/google_test_sub_provider_event_metadata__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/minimax_test_sub_provider_event_metadata__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/minimax_test_sub_provider_event_metadata__conversation_stream.snap
index 2b8c14b7e..8cc66df6e 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/minimax_test_sub_provider_event_metadata__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/minimax_test_sub_provider_event_metadata__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_anthropic_opus_5_parallel_tool_round_trip__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_anthropic_opus_5_parallel_tool_round_trip__conversation_stream.snap
index 3bb600f23..4a3be74d4 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_anthropic_opus_5_parallel_tool_round_trip__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_anthropic_opus_5_parallel_tool_round_trip__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_chat_completion_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_chat_completion_stream__conversation_stream.snap
index 766ab2b40..ed19f59f3 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_chat_completion_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_chat_completion_stream__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_image_attachment__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_image_attachment__conversation_stream.snap
index e428ef8e5..6b2d3773b 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_image_attachment__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_image_attachment__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_multi_turn_conversation__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_multi_turn_conversation__conversation_stream.snap
index 961482276..8bd961440 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_multi_turn_conversation__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_multi_turn_conversation__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
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diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_structured_output__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_structured_output__conversation_stream.snap
index 934f56c16..438342100 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_structured_output__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_structured_output__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
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     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_auto__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_auto__conversation_stream.snap
index c16440589..4f21d1bba 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_auto__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_auto__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_function__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_function__conversation_stream.snap
index ff089c794..e87a0f890 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_function__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_function__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_reasoning__conversation_stream.snap
index c292d2e27..677ae66e5 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_no_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_no_reasoning__conversation_stream.snap
index 5bf81adb3..de352b6be 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_no_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_no_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_reasoning__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_reasoning__conversation_stream.snap
index 1a1472eb0..2063a38f4 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_reasoning__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_required_reasoning__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_stream__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_stream__conversation_stream.snap
index ddfc629a0..d8a26fed3 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_stream__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/test_tool_call_stream__conversation_stream.snap
@@ -84,11 +84,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {
diff --git a/crates/jp_llm/tests/fixtures/openrouter/x-ai_test_sub_provider_event_metadata__conversation_stream.snap b/crates/jp_llm/tests/fixtures/openrouter/x-ai_test_sub_provider_event_metadata__conversation_stream.snap
index 3451eed28..207254cc1 100644
--- a/crates/jp_llm/tests/fixtures/openrouter/x-ai_test_sub_provider_event_metadata__conversation_stream.snap
+++ b/crates/jp_llm/tests/fixtures/openrouter/x-ai_test_sub_provider_event_metadata__conversation_stream.snap
@@ -87,11 +87,6 @@ expression: v
         "strategy": "replace",
         "discard_when_merged": false
       },
-      "labels": {
-        "value": {},
-        "strategy": "replace",
-        "discard_when_merged": false
-      },
       "start_local": false
     },
     "style": {