Refactor peer schedule job API to use proper REST verbs (#1239)

* Fixed quotation marks

* Update wgd.sh

* Refactor peer schedule job API to use proper REST verbs

Replace single POST endpoints with POST/PUT/DELETE for peer schedule jobs.
Add require_fields decorator for request validation. Add fetchPut and
fetchDelete helpers in the frontend.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Add local development with Docker section to docker/README.md

Explains how to mount src/ as a volume for live code editing
using a compose-local.yaml setup.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Update README dev section with frontend build instructions

Replace Vite dev server tip with npm install/build workflow
and docker restart step.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Donald Zou <donaldzou@live.hk>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

src/modules/AmneziaPeer.py

@@ -116,5 +116,5 @@ class AmneziaPeer(Peer):
             self.configuration.getPeers()
             return True, None
         except subprocess.CalledProcessError as exc:
-            current_app.logger.error(f"Subprocess call failed:\n{exc.output.decode("UTF-8")}")
+            current_app.logger.error(f"Subprocess call failed:\n{exc.output.decode('UTF-8')}")
             return False, "Internal server error"