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/fpdl_logins.ts

@@ -0,0 +1,45 @@
+import { MyPlexAccount } from "@ctrl/plex";
+import { loopError } from "@inrixia/helpers";
+import { args, fApi } from "./lib/helpers/index";
+import { plex } from "./lib/prompts/index";
+
+import type { Self } from "floatplane/user";
+export type User = Self;
+
+export const loginFloatplane = async (): Promise<User> => {
+	const loginResponse = await fApi.deviceLogin();
+	console.log(`\nSigned in as \u001b[36m${loginResponse.username}\u001b[0m!\n`);
+	return loginResponse;
+};
+
+export const loginPlex = async (): Promise<string> => {
+	let plexToken: string;
+	if (args.headless === true) {
+		if (args.plexUsername === undefined || args.plexPassword === undefined)
+			throw new Error('Need plex username/password to login. Please pass them as --plexUsername="" --plexPassword="" or enviroment variables!');
+		plexToken = (await loopError(
+			async () =>
+				(
+					await new MyPlexAccount({
+						username: args.plexUsername,
+						password: args.plexPassword,
+					}).connect()
+				).token,
+			async (err) => console.error(`\nLooks like those login details didnt work, Please try again... ${err}`),
+		)) as string;
+	} else {
+		console.log("\n> Please enter your plex details. (Username and Password is not saved, only used to generate a token.)");
+		plexToken = (await loopError(
+			async () =>
+				(
+					await new MyPlexAccount({
+						username: await plex.username(),
+						password: await plex.password(),
+					}).connect()
+				).token,
+			async (err) => console.error(`\nLooks like those login details didnt work, Please try again... ${err}`),
+		)) as string;
+		console.log(`> Fetched plex token: \u001b[36m${plexToken}\u001b[0m!\n`);
+	}
+	return plexToken;
+};