items: read the details of the focused item

The item grids said which item you were on ("a torch, slot 3") but nothing
about what it was -- no description, no condition, and no "what does this
refine into", which is the whole of alchemy.

The game already composes all of it in one place: item.getPopupMessage()
(modules/item.lua:199) returns the cursor popup's line list, so read that
rather than re-deriving anything from templates.

It also already gates it behind a dwell -- the popup only fades in after
examinationPopupFadeInDuration (0.4s), so a sighted player who arrows past a
slot never sees the details either. Mirror that instead of inventing a
modality: stop on an item for 0.6s and the details speak themselves, queued.
"=" reads them on demand, Shift+= keeps the name line too. ("r" was the
obvious mnemonic but is a game-claimed scancode, and getCommand() dispatches
on scancode ignoring modifiers.)

New generic hook descriptor.details() returning a LIST of blocks, so each is
also pushed into the console history and [ ] \ walk a long description back
afterwards -- the journal page trick. Only _itemgrid.lua implements it so far.

The other half is the hint panel craft/refine/trade draw permanently beside
the grid, which the popup never contains: recipe components, and price, which
appears nowhere else in the game. The three panels share a shape, so one
reader covers them. Affordability survives only as a red colour in the hint
table and decides whether enter does anything, so it is decoded and spoken.

59 testbed checks, 0 failures: a synthetic ivy_leaves item as the version-bump
canary for getPopupMessage, hasUpvalue over every hint-panel local, four
assertions on the pure settleStep, and an end-to-end "=" press. Not yet
exercised against a live item -- the prologue inventory is empty.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

accessibility/README.md

@@ -173,6 +173,38 @@ Common actions include Activate, Wield, Unwield, Wear, Take off, Switch on,
 Switch off, Drink, Eat, Apply, Read, Open, and Prepare for throwing / Pack away.
 **Equipping is done from here** — there is no separate equipment screen.
 
+### Item details (`=`)
+
+| Key | Action |
+|---|---|
+| `=` | Read the full details of the item under the cursor |
+| `Shift+=` | The same, including the item's name |
+
+Reading the cursor only tells you *which* item you are on. The details tell you
+what it is: what kind of thing it is, its condition if it can wear out, its
+description, and — the useful part for alchemy — **what it turns into**, listed
+per refinement method:
+
+```
+It is a raw material. Some fresh green leaves from ivy. They contain weak
+poison. Yields: x1 when ground in a mortar. x0.2 when distilled.
+```
+
+On the crafting, refining and trading screens the details also read the panel
+beside the grid, which is where the game keeps the things you most need before
+committing: a recipe's components and **whether you can afford them**, what a
+refinement produces and how much of it you already have, and — in a shop — the
+**price**, which appears nowhere else.
+
+You do not have to press `=` every time. **Stop on an item for about half a
+second and the details are read to you automatically**, which is what the game
+does for a sighted player: its own detail popup only appears after you have
+hovered a slot for a moment. Arrow through a tab quickly and you hear only the
+names, exactly as a sighted player sees only the icons.
+
+Details also go into the message history, so `[` and `]` walk back through a
+long description a piece at a time and `\` re-reads a line.
+
 ### Your character
 
 | Key | Action |