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_setupChannelsTask.brs

@@ -0,0 +1,65 @@
+sub init()
+    m.top.functionname = "request"
+  end sub
+  
+  function request()
+    json = ParseJSON(m.top.unparsed)
+  
+    contentNode = createObject("roSGNode", "ContentNode")
+    for each channel in json.channels
+      node = createObject("roSGNode", "category_node")
+      node.title = channel.title
+      apiConfigObj = ApiConfig()
+      node.feed_url = apiConfigObj.buildApiUrl("/api/v3/content/creator?id=" + channel.creator + "&channel=" + channel.id)
+      node.creatorGUID = channel.creator
+      node.icon = channel.icon.path
+      if channel.cover.childImages.Peek() = invalid
+        node.HDPosterURL = loadCacheImage(channel.cover.path)
+      else
+        node.HDPosterURL = loadCacheImage(channel.cover.childImages[0].path)
+      end if
+
+      contentNode.appendChild(node)
+    end for
+  
+    m.top.category_node = contentNode
+    return ""
+  end function
+  
+  function loadCacheImage(url) as String
+    appInfo = createObject("roAppInfo")
+    version = appInfo.getVersion()
+    useragent = "Hydravion (Roku) v" + version
+
+  ' Get Bearer token using TokenUtil
+  tokenUtilObj = TokenUtil()
+  accessToken = tokenUtilObj.getAccessToken()
+  if accessToken = invalid then
+    return url
+  end if
+  
+    fs = createObject("roFileSystem")
+    xfer = createObject("roUrlTransfer")
+    xfer.SetCertificatesFile("common:/certs/ca-bundle.crt")
+    xfer.InitClientCertificates()
+    xfer.AddHeader("Accept", "application/json")
+    xfer.AddHeader("User-Agent", useragent)
+  xfer.AddHeader("Authorization", "Bearer " + accessToken)
+  
+    filename = url
+    filename = mid(filename, instr(1, filename, "//") + 1)
+    while instr(1, filename, "/") > 0
+      filename = mid(filename, instr(1, filename, "/") + 1)
+    end while
+  
+    if not fs.Exists("cachefs:/" + filename) then
+      xfer.SetUrl(url)
+      xfer.AsyncGetToFile("cachefs:/" + filename)
+      filename = url
+    else
+      filename = "cachefs:/" + filename
+    end if
+  
+    return filename
+  end function
+