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_content_screen.brs

@@ -0,0 +1,71 @@
+sub init()
+  m.content_grid = m.top.FindNode("content_grid")
+  'm.content_grid.caption1Font.size = 24
+  'm.content_grid.caption2NumLines = 1
+  'm.content_grid.caption2Font.size = 18
+  'm.content_grid.captionLineSpacing = 10.0
+  m.header = m.top.FindNode("header")
+  m.hideHeader = m.top.FindNode("hideHeader")
+  m.showHeader = m.top.FindNode("showHeader")
+  m.cover = m.top.FindNode("cover")
+  m.icon = m.top.FindNode("icon")
+  'm.liveButton = m.top.FindNode("liveButton")
+  m.top.observeField("visible", "onVisibleChange")
+  m.top.observeField("feed_node", "onFeedChanged")
+  m.content_grid.observeField("itemFocused", "OnFocusItem")
+  m.top.observeField("jumpTo", "jumpTo")
+  m.visibleCover = true
+end sub
+
+sub onFeedChanged(obj)
+  m.header.text = m.top.feed_name
+  'm.cover.uri = m.creator.HDPOSTERURL
+  showpostergrid(m.top.feed_node)
+end sub
+
+sub showpostergrid(content)
+  m.content_grid.content = content
+  m.content_grid.visible = true
+  if m.top.visible = true then
+    m.content_grid.setFocus(true)
+  end if
+  m.cover.uri = m.top.category_node.HDPOSTERURL
+  'm.icon.uri = m.top.category_node.icon
+  m.icon.imageUri = m.top.category_node.icon
+  m.icon.fixsize = true
+  'm.content_grid.jumpToItem = m.top.jumpTo
+  '? m.top.jumpTo
+end sub
+
+sub OnFocusItem(event)
+  m.top.itemIndex = event.getData()
+  '? event.getData()
+  if event.getData() > 2 and m.visibleCover = true
+    m.hideHeader.control = "start"
+    m.visibleCover = false
+  else if event.getData() < 3 and m.visibleCover = false
+    m.showHeader.control = "start"
+    m.visibleCover = true
+  end if
+end sub
+
+sub jumpTo(item)
+  '? item.getData()
+  'm.content_grid.jumpToItem = item.getData()
+end sub
+
+sub onVisibleChange()
+  if m.top.visible = true then
+    m.content_grid.setFocus(true)
+  end if
+end sub
+
+function onKeyEvent(key as string, press as boolean) as boolean
+  if not press then return false
+
+  if key = "up" and m.content_grid.hasFocus()
+    return true
+  end if
+
+  return false
+end function