Floatplane channel plugin for Jellyfin 10.10.x: browse, HLS proxy, cookie session, CI release

- IChannel: creators -> sub-channels -> video posts (public listing API, search mapped)
- IRequiresMediaInfoCallback -> signed proxy URLs; stream controller rewrites HLS so the
  AES-128 key is fetched server-side with the session cookie, segments stay on the CDN
- delivery/info cached per token lifetime and throttled (~2/min)
- config page: paste sails.sid + validate, extra creators, quality, search test
- scripts/package.sh -> plugin folder + zip + md5 + manifest.json; Gitea release workflow
- research docs, HAR analysis (HAR itself gitignored), install-pi5.sh

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

doc/research/reference-sources/hydra_postTask.brs

@@ -0,0 +1,49 @@
+sub init()
+    m.top.functionname = "post"
+    m.top.response = ""
+  end sub
+  
+  function post()
+    ' Get Bearer token using TokenUtil
+    tokenUtilObj = TokenUtil()
+    accessToken = tokenUtilObj.getAccessToken()
+    if accessToken = invalid then
+      m.top.error = "Not authenticated - please login"
+      return ""
+    end if
+
+    appInfo = createObject("roAppInfo")
+    version = appInfo.getVersion()
+    useragent = "Hydravion (Roku) v" + version
+  
+    https = CreateObject("roUrlTransfer")
+    https.RetainBodyOnError(true)
+    port = CreateObject("roMessagePort")
+    https.SetMessagePort(port)
+    https.SetUrl(m.top.url)
+    https.setCertificatesFile("common:/certs/ca-bundle.crt")
+    https.AddHeader("Content-Type", "application/json")
+    https.AddHeader("User-Agent", useragent)
+    https.AddHeader("Authorization", "Bearer " + accessToken)
+    https.initClientCertificates()
+    
+    parsedJson = FormatJson(m.top.body)
+    
+    if https.AsyncPostFromString(parsedJson)
+        while (true)
+            event = wait(5000,port)
+            if type(event) = "roUrlEvent"
+                code = event.GetResponseCode()
+                if code = 200
+                    m.top.response = event.GetString()
+                else
+                     m.top.error = event.GetString()
+                 end if
+            else if event = invalid
+                https.AsyncCancel()
+            end if
+        end while
+    end if
+    return ""
+  end function
+