fix: correct field names in plan_changed and workspace_file_changed specs

The specs used invented prefixed field names (plan-operation,
workspace-file-path, workspace-file-operation) that don't match the
upstream wire format. After the protocol layer's camelCase→kebab-case
conversion, upstream sends :operation and :path — not the prefixed
variants. Updated specs, docs, and changelog to match.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: krukow

CHANGELOG.md

@@ -16,8 +16,8 @@ All notable changes to this project will be documented in this file. This change
 - `:copilot/session.task_complete` event type added to `::event-type` spec and `event-types` var. Previously it was in the spec but missing from the public `event-types` set (upstream PR #544).
 - `:copilot/assistant.streaming_delta` new event type: emitted when the total response size changes during streaming. Data: `{:total-response-size-bytes N}`. Added to `::event-type` spec, `event-types` var, and `assistant-events` var (upstream PR #544).
 - `:copilot/session.mode_changed` event type: emitted when the session agent mode changes. Data: `{:previous-mode "...", :new-mode "..."}`. Added to `::event-type` spec, `event-types` var, and `session-events` var.
-- `:copilot/session.plan_changed` event type: emitted when the session plan changes. Data: `{:plan-operation "create"|"update"|"delete"}`. Added to `::event-type` spec, `event-types` var, and `session-events` var.
-- `:copilot/session.workspace_file_changed` event type: emitted when a workspace file is created or updated. Data: `{:workspace-file-path "...", :workspace-file-operation "create"|"update"}`. Added to `::event-type` spec, `event-types` var, and `session-events` var.
+- `:copilot/session.plan_changed` event type: emitted when the session plan changes. Data: `{:operation "create"|"update"|"delete"}`. Added to `::event-type` spec, `event-types` var, and `session-events` var.
+- `:copilot/session.workspace_file_changed` event type: emitted when a workspace file is created or updated. Data: `{:path "...", :operation "create"|"update"}`. Added to `::event-type` spec, `event-types` var, and `session-events` var.
 - Data specs for new events: `::session.mode_changed-data`, `::session.plan_changed-data`, `::session.workspace_file_changed-data`, `::session.task_complete-data`, `::assistant.streaming_delta-data`.
 
 ### Changed (upstream PR #544 sync)

doc/reference/API.md

@@ -862,8 +862,8 @@ copilot/tool-events
 | `:copilot/session.compaction_start` | Context compaction started (infinite sessions) |
 | `:copilot/session.compaction_complete` | Context compaction completed (infinite sessions) |
 | `:copilot/session.mode_changed` | Session agent mode changed; data: `{:previous-mode "...", :new-mode "..."}` |
-| `:copilot/session.plan_changed` | Session plan created/updated/deleted; data: `{:plan-operation "create"\|"update"\|"delete"}` |
-| `:copilot/session.workspace_file_changed` | Workspace file created or updated; data: `{:workspace-file-path "...", :workspace-file-operation "create"\|"update"}` |
+| `:copilot/session.plan_changed` | Session plan created/updated/deleted; data: `{:operation "create"\|"update"\|"delete"}` |
+| `:copilot/session.workspace_file_changed` | Workspace file created or updated; data: `{:path "...", :operation "create"\|"update"}` |
 | `:copilot/session.task_complete` | Task completed by the session agent; data: `{:summary "..."}` (optional) |
 | `:copilot/skill.invoked` | Skill invocation triggered |
 | `:copilot/user.message` | User message added |

src/github/copilot_sdk/specs.clj

@@ -449,15 +449,14 @@
   (s/keys :req-un [::previous-mode ::new-mode]))
 
 ;; Session plan changed event
-(s/def ::plan-operation #{"create" "update" "delete"})
+(s/def ::operation #{"create" "update" "delete"})
 (s/def ::session.plan_changed-data
-  (s/keys :req-un [::plan-operation]))
+  (s/keys :req-un [::operation]))
 
 ;; Session workspace file changed event
-(s/def ::workspace-file-path string?)
-(s/def ::workspace-file-operation #{"create" "update"})
+;; ::path already defined above; ::operation reused (superset covers both events)
 (s/def ::session.workspace_file_changed-data
-  (s/keys :req-un [::workspace-file-path ::workspace-file-operation]))
+  (s/keys :req-un [::path ::operation]))
 
 ;; Session task complete event
 (s/def ::session.task_complete-data