Scrub V1/V1.1 framing from canvas comments

Rewrites doc comments on the canvas declarations, session config fields,
and dispatch wiring to describe the surface as-is without versioning
narrative or references to the removed hosted-extension types.

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

Author: jmoseley

nodejs/src/canvas.ts

@@ -3,7 +3,7 @@
  *--------------------------------------------------------------------------------------------*/
 
 /**
- * Canvas V1.1 — extension-owned canvases declared via
+ * Extension-owned canvases declared via
  * `joinSession({ canvases: [createCanvas({...})] })`.
  *
  * The on-the-wire declaration shape mirrors the runtime's `CanvasDeclaration`
@@ -13,11 +13,9 @@
  * `canvas.action.invoke` dispatches by `(canvasId, actionName)` back to the
  * handlers.
  *
- * The wire RPC method is still `hostExtension.invoke` (runtime preserves the
- * legacy name); inside, `method === "canvas.action.invoke"` identifies canvas
- * dispatches. The runtime synthesizes an internal
- * `implementationId = "v1.1.<extensionId>/<canvasId>"`, but the SDK ignores
- * it and routes purely on `params.canvasId` + `params.actionName`.
+ * The wire RPC method is `hostExtension.invoke`; inside,
+ * `method === "canvas.action.invoke"` identifies canvas dispatches. The SDK
+ * routes purely on `params.canvasId` + `params.actionName`.
  */
 
 /**

nodejs/src/client.ts

@@ -1861,10 +1861,10 @@ export class CopilotClient {
                 await this.handleSystemMessageTransform(params)
         );
 
-        // Canvas V1.1: runtime preserves the legacy `hostExtension.invoke`
-        // wire method for canvas dispatches. The inner `method` discriminates;
+        // Canvas dispatch: the runtime uses the `hostExtension.invoke` wire
+        // method for canvas dispatches. The inner `method` discriminates;
         // we route `canvas.action.invoke` to the per-session canvas registry
-        // and reject anything else (no other inner method is in use post-V1.1).
+        // and reject anything else.
         this.connection.onRequest(
             "hostExtension.invoke",
             async (params: {
@@ -2071,9 +2071,8 @@ export class CopilotClient {
             throw new Error(`Session not found: ${params.sessionId}`);
         }
         const { method, params: inner } = params.request;
-        // Canvas V1.1: only `canvas.action.invoke` is in use. Other inner methods
-        // are dead in the V1.1 cutover; reject explicitly so misrouted calls
-        // don't silently no-op.
+        // Only `canvas.action.invoke` is accepted as an inner method; reject
+        // anything else explicitly so misrouted calls don't silently no-op.
         if (method !== "canvas.action.invoke") {
             throw new Error(`Unsupported hostExtension.invoke method: ${method}`);
         }

nodejs/src/types.ts

@@ -1350,7 +1350,7 @@ export interface SessionConfig {
     tools?: Tool<any>[];
 
     /**
-     * Canvases contributed by this session participant (V1.1). The declaring
+     * Canvases contributed by this session participant. The declaring
      * connection becomes the live provider for `canvas.open|focus|close|reload`
      * and `canvas.action.invoke` dispatches targeting each canvas's `id` for
      * the lifetime of the connection. Re-declaring the same id on resume

rust/src/canvas.rs

@@ -1,18 +1,10 @@
-//! Canvas V1.1 — extension-owned canvases declared via `joinSession({ canvases: [...] })`.
+//! Extension-owned canvases declared via `joinSession({ canvases: [...] })`.
 //!
-//! This module is the Rust mirror of the locked TypeScript wire shape committed
-//! in runtime PR #8441 (`jmoseley/canvas-runtime-support`, commit `0d9535192b`).
+//! This module is the Rust mirror of the TypeScript wire shape.
 //!
-//! Status: **additive types + handler trait + Canvas/CanvasBuilder + dispatch routing**.
-//!
-//! The wire RPC method is still `hostExtension.invoke` (runtime keeps the
-//! legacy name); inside, the inner `method == "canvas.action.invoke"`
-//! identifies canvas dispatches. Runtime synthesizes
-//! `implementationId = "v1.1.<extensionId>/<canvasId>"`, but the SDK routes
-//! purely on `params.canvasId` + `params.actionName`.
-//!
-//! Old hosted-extension types in `types.rs` are scheduled for deletion in a
-//! follow-up edit once the host fully migrates to the new path.
+//! The wire RPC method is `hostExtension.invoke`; inside, the inner
+//! `method == "canvas.action.invoke"` identifies canvas dispatches. The SDK
+//! routes purely on `params.canvasId` + `params.actionName`.
 
 use std::collections::HashMap;
 use std::sync::Arc;
@@ -356,9 +348,6 @@ pub fn build_registry(canvases: &[Canvas]) -> CanvasRegistry {
 
 /// Wire-level params for `canvas.action.invoke` (the inner `method` field of
 /// a `hostExtension.invoke` JSON-RPC request).
-///
-/// Mirrors the runtime's `HostedExtensionRequest.params` shape exactly —
-/// `canvas-agent-runtime/src/core/server.ts` `dispatchCanvas*`.
 #[derive(Debug, Clone, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct CanvasInvokeParams {

rust/src/lib.rs

@@ -3,7 +3,7 @@
 #![deny(rustdoc::broken_intra_doc_links)]
 #![cfg_attr(test, allow(clippy::unwrap_used))]
 
-/// Canvas V1.1 — extension-owned canvas declarations and per-canvas handlers.
+/// Extension-owned canvas declarations and per-canvas handlers.
 pub mod canvas;
 /// Bundled CLI binary extraction and caching.
 pub mod embeddedcli;

rust/src/session.rs

@@ -1815,7 +1815,7 @@ async fn handle_request(
         }
 
         "hostExtension.invoke" => {
-            // V1.1 canvas dispatch: the only inner method accepted is
+            // Canvas dispatch: the only inner method accepted is
             // `canvas.action.invoke`, routed through the canvas registry built
             // from `SessionConfig.canvases`.
             #[derive(serde::Deserialize)]

rust/src/types.rs

@@ -1101,7 +1101,7 @@ pub struct SessionConfig {
     /// Defaults to `Some(true)` via [`SessionConfig::default`].
     #[serde(skip_serializing_if = "Option::is_none")]
     pub request_elicitation: Option<bool>,
-    /// Renderer-side opt-in (V1.1): when `true`, the runtime surfaces canvas
+    /// Renderer-side opt-in: when `true`, the runtime surfaces canvas
     /// agent tools (`open_canvas`, `discover_canvases`, ...) to the model.
     /// Default off — TUI / headless / SDK callers stay clean unless they can
     /// actually display canvases. Independent of provider semantics, which
@@ -1206,7 +1206,7 @@ pub struct SessionConfig {
     /// associated [`CommandHandler`] is called when executed.
     #[serde(skip_serializing_if = "Option::is_none", skip_deserializing)]
     pub commands: Option<Vec<CommandDefinition>>,
-    /// Canvas V1.1 declarations. Each entry binds a [`CanvasDeclaration`] +
+    /// Canvas declarations. Each entry binds a [`CanvasDeclaration`] +
     /// [`crate::canvas::CanvasHandler`] for this session; the runtime treats
     /// the declaring connection as the live provider for every declared
     /// canvas id. Serialized as an array of `CanvasDeclaration` on the wire.
@@ -1545,7 +1545,7 @@ impl SessionConfig {
         self
     }
 
-    /// Renderer-side opt-in (V1.1): surface canvas agent tools to the model.
+    /// Renderer-side opt-in: surface canvas agent tools to the model.
     pub fn with_request_canvas_renderer(mut self, enable: bool) -> Self {
         self.request_canvas_renderer = Some(enable);
         self
@@ -1748,7 +1748,7 @@ pub struct ResumeSessionConfig {
     /// Advertise elicitation provider capability on resume.
     #[serde(skip_serializing_if = "Option::is_none")]
     pub request_elicitation: Option<bool>,
-    /// Renderer-side opt-in (V1.1) on resume; see
+    /// Renderer-side opt-in on resume; see
     /// [`SessionConfig::request_canvas_renderer`].
     #[serde(skip_serializing_if = "Option::is_none")]
     pub request_canvas_renderer: Option<bool>,
@@ -1818,7 +1818,7 @@ pub struct ResumeSessionConfig {
     /// so the resume payload re-supplies the registration.
     #[serde(skip_serializing_if = "Option::is_none", skip_deserializing)]
     pub commands: Option<Vec<CommandDefinition>>,
-    /// Canvas V1.1 declarations to (re-)register on resume. Same semantics
+    /// Canvas declarations to (re-)register on resume. Same semantics
     /// as [`SessionConfig::canvases`]; re-declaring a canvas id replaces
     /// the prior entry on the runtime side.
     #[serde(default, skip_serializing_if = "Vec::is_empty", skip_deserializing)]
@@ -2158,7 +2158,7 @@ impl ResumeSessionConfig {
         self
     }
 
-    /// Renderer-side opt-in (V1.1) on resume: surface canvas agent tools to the model.
+    /// Renderer-side opt-in on resume: surface canvas agent tools to the model.
     pub fn with_request_canvas_renderer(mut self, enable: bool) -> Self {
         self.request_canvas_renderer = Some(enable);
         self