Use Deno 2.7.7 for Fresh development

Deno 2.7.7 fixes the upstream Fresh/Vite dev server crash that
prevented final verification of the Fedify fixes for Fresh 2.
Update the repository's default Deno version and document the
known-good baseline for the Fresh integration example.

#621
https://github.com/denoland/deno/releases/tag/v2.7.7

Author: dahlia

.github/actions/setup-deno/action.yaml

@@ -6,4 +6,4 @@ runs:
   steps:
   - uses: denoland/setup-deno@v2
     with:
-      deno-version: 2.7.6  # Keep in sync with mise.toml
+      deno-version: 2.7.7  # Keep in sync with mise.toml

CHANGES.md

@@ -23,7 +23,9 @@ To be released.
  -  Switched Fedify's JSR-facing JSON-LD imports to jsonld's ESM entrypoint
     so source-based runtimes such as Deno, Cloudflare Workers, and Fresh 2's
     Vite SSR pipeline do not have to evaluate the package through CommonJS
-    interop when loading Linked Data signature support.  [[#621]]
+    interop when loading Linked Data signature support.  Fresh 2 development
+    mode has been verified on Deno 2.7.7 after an upstream Deno 2.7.6 dev
+    server regression was fixed.  [[#621]]
 
 ### @fedify/init
 

docs/manual/integration.md

@@ -795,6 +795,11 @@ deno add jsr:@fedify/fresh
 > [!NOTE]
 > The `@fedify/fresh` package only supports Fresh 2.x.
 
+> [!NOTE]
+> Fresh 2 development mode has been verified with Deno 2.7.7.  Deno 2.7.6 had
+> an upstream Vite/esbuild regression that caused
+> `Callback called multiple times` before Fedify code could run.
+
 > [!WARNING]
 > Due to `@fedify/fedify` use `Temporal` inside, you should add `deno.unstable`
 > to `compilerOptions.libs` field of `deno.json`.

examples/fresh/README.md

@@ -4,6 +4,10 @@ Fedify–Fresh integration example
 This is a simple example of how to integrate Fedify into an [Fresh]
 application.
 
+Use Deno 2.7.7 or later.  Deno 2.7.6 had an upstream Fresh/Vite dev-server
+regression that caused `Callback called multiple times` errors before Fedify
+code could run.
+
 [Fresh]: https://fresh.deno.dev/
 
 
@@ -26,7 +30,7 @@ Running the example
 3.  Move to example folder
 
     ~~~~ sh
-    cd ../../examples/fresh
+    cd examples/fresh
     ~~~~
 
 4.  Start the server:

mise.toml

@@ -1,6 +1,6 @@
 [tools]
 bun = "1.2.22"
-deno = "2.7.6"
+deno = "2.7.7"
 node = "22"
 pnpm = "10.28.0"