Complete Milestone 7 crafting and portal guide (#79)

docs/LEGACY_M7_AUDIT.md

@@ -52,7 +52,7 @@ Legacy's travel path creates no automatic Return Link. Rivencraft currently defa
 
 | Area | Legacy evidence and modern boundary |
 | --- | --- |
-| Crafting | [Legacy recipes](https://github.com/Mystcraft/Mystcraft-Legacy/tree/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/resources/assets/mystcraft/recipes) specify the Receptacle, Binder, Mixer, Folder, Desk, and other writing blocks. [`RecipeLinkingbook`](https://github.com/Mystcraft/Mystcraft-Legacy/blob/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/java/com/xcompwiz/mystcraft/data/RecipeLinkingbook.java#L28-L60) combines one Link Panel and leather anywhere in the grid. Rivencraft already has Binder, Mixer, Ink Vial, Notebook, Desk, Crystal Block, and Linking Book recipes. #79 adds only missing recipes/processes; preserve vanilla-Lectern conversion, noncraftable Blank Pages, and optional JEI. |
+| Crafting | [Legacy recipes](https://github.com/Mystcraft/Mystcraft-Legacy/tree/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/resources/assets/mystcraft/recipes) specify the Receptacle, Binder, Mixer, Folder, Desk, and other writing blocks. [`RecipeLinkingbook`](https://github.com/Mystcraft/Mystcraft-Legacy/blob/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/java/com/xcompwiz/mystcraft/data/RecipeLinkingbook.java#L28-L60) combines one Link Panel and leather anywhere in the grid. Rivencraft has Binder, Mixer, Ink Vial, Notebook, Desk, Crystal Block, Linking Book, and Receptacle recipes. #79 keeps these data-driven and adds recipe-book unlocks for Crystal Block, Receptacle, and Ink Vial. The Legacy potion-based ink variant is omitted: in 1.21.1 a simple potion ingredient does not return its glass bottle, while the existing water-bucket recipe returns its bucket. The Legacy Folder/Portfolio use Rivencraft's Notebook; the old two-part Desk is one item; the old Lectern/Book Stand recipes use a vanilla Lectern converted in-world by adding a Rivencraft book or page. Blank Pages remain noncraftable and Link Panels remain outside the Desk. JEI automatically displays the JSON crafting recipes; its existing optional categories cover Mixer, Desk, and Binder processes. The lectern interaction intentionally has no JEI guide. With Create installed, an optional Ponder scene attached to the Receptacle item demonstrates frame construction and book insertion; the core mod still runs without Create. |
 | Sounds | [`Sounds`](https://github.com/Mystcraft/Mystcraft-Legacy/blob/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/java/com/xcompwiz/mystcraft/data/Sounds.java#L8-L26) registers pop, link, disarm, following, intra-link, fissure-link, portal-link, and meteor roar. The matching OGGs are in the local extraction. Rivencraft already carries link, fissure-link, and meteor roar. #80 should reuse and credit available Legacy files before creating alternatives. |
 | Advancements | [Legacy advancement JSONs](https://github.com/Mystcraft/Mystcraft-Legacy/tree/9bc8ddc061845df0cd5ea47f4fdef773cff786ae/src/main/resources/assets/mystcraft/advancements) have inventory milestones for a symbol page, unlinked Linking Book, and Age Book; a Writing Desk trigger; a safe Age-travel trigger; and a hidden Quinn trigger. #81 should use modern server-owned criteria. Quinn has no established Rivencraft equivalent and should be documented or deliberately omitted, not awarded on preview. |