chore: point pslua + package-set links at purescript-lua org

Repos moved from Unisay/* to the purescript-lua org. Update the pslua
flake input and lockfile owner (same rev 94c13ce), the packages.dhall
upstream-lua release URL, and the AGENTS.md links, so nothing relies on
the old-owner redirect.

Author: Unisay

AGENTS.md

@@ -1,6 +1,6 @@
 # AGENTS.md
 
-A PureScript→Lua FFI fork in the [`purescript-lua`](https://github.com/Unisay/purescript-lua) package set. Generated code targets **Lua 5.1**.
+A PureScript→Lua FFI fork in the [`purescript-lua`](https://github.com/purescript-lua/purescript-lua) package set. Generated code targets **Lua 5.1**.
 
 ## Commands
 
@@ -34,12 +34,12 @@ A bare `function … end` or an unparenthesised expression fails to parse.
 
 ## Toolchain
 
-`flake.nix` pins everything through [`purescript-overlay`](https://github.com/thomashoneyman/purescript-overlay): purs 0.15.16 (`purs-bin.purs-0_15_16`), spago 0.21.0 (`spago-bin.spago-0_21_0`), Lua 5.1 (`lua51Packages`). The `pslua` input tracks `github:Unisay/purescript-lua`; keep `flake.lock` reasonably current, since a long-stale pslua pin won't create the `--lua-output-file` directory and CI fails.
+`flake.nix` pins everything through [`purescript-overlay`](https://github.com/thomashoneyman/purescript-overlay): purs 0.15.16 (`purs-bin.purs-0_15_16`), spago 0.21.0 (`spago-bin.spago-0_21_0`), Lua 5.1 (`lua51Packages`). The `pslua` input tracks `github:purescript-lua/purescript-lua`; keep `flake.lock` reasonably current, since a long-stale pslua pin won't create the `--lua-output-file` directory and CI fails.
 
 ## Releasing
 
-Tag-driven, with no GitHub Release or changelog entry. The full conventions live in the [package-set repo](https://github.com/Unisay/purescript-lua-package-sets/blob/master/CONTRIBUTING.md): push an annotated tag on `master`, bump this fork's `version` in the package set's `src/packages.dhall`, refresh `latest-compatible-sets.json`, and push a `psc-*` set tag.
+Tag-driven, with no GitHub Release or changelog entry. The full conventions live in the [package-set repo](https://github.com/purescript-lua/purescript-lua-package-sets/blob/master/CONTRIBUTING.md): push an annotated tag on `master`, bump this fork's `version` in the package set's `src/packages.dhall`, refresh `latest-compatible-sets.json`, and push a `psc-*` set tag.
 
 ## Decisions
 
-Cross-cutting decisions are recorded as ADRs in the [package-set repo](https://github.com/Unisay/purescript-lua-package-sets/tree/master/docs/adr). Read them before a decision that affects the set, and add one after making such a decision.
+Cross-cutting decisions are recorded as ADRs in the [package-set repo](https://github.com/purescript-lua/purescript-lua-package-sets/tree/master/docs/adr). Read them before a decision that affects the set, and add one after making such a decision.

flake.lock

@@ -8,7 +8,7 @@
       url = "github:thomashoneyman/purescript-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    pslua.url = "github:Unisay/purescript-lua";
+    pslua.url = "github:purescript-lua/purescript-lua";
   };
 
   outputs = { self, nixpkgs, flake-utils, purescript-overlay, pslua }:

flake.nix

@@ -1,5 +1,5 @@
 let upstream =
-      https://github.com/Unisay/purescript-lua-package-sets/releases/download/psc-0.15.15-20240424/packages.dhall
+      https://github.com/purescript-lua/purescript-lua-package-sets/releases/download/psc-0.15.15-20240424/packages.dhall
         sha256:7bec6b9dc133bafde7e9d40d50f3dc7afbe61b5f52aca531a830bad68bca0823
 
 in  upstream