diff --git a/docs/agent-log.md b/docs/agent-log.md
index 4199e47..bbd2fbd 100644
--- a/docs/agent-log.md
+++ b/docs/agent-log.md
@@ -6,6 +6,18 @@ open or not verified. Keep each entry short; the git history has the details.
 
 
 
+## 2026-10-29: t82 dev console material table lookup (Codex)
+
+- Display-name discovery scans MD ids 1..NMAT-1 through devGiveable; DEV_MATERIALS
+  supplies internal aliases. Listing, suggestions and Tab share the real-table list.
+- Added regression removing CUORE temporarily (restored in finally): lookup/give,
+  prefixes, filtering, suggestions and completion failed before the fix and pass after.
+  Corrected the new prefix expectation because Copper ore vein also matches.
+- Files: src/sim/devconsole.js, test/t_dev_console.js, tasks/t82_dev_console_finds.md
+  and this log. Node console suite and python3 test/run_all.py passed (log:
+  /tmp/t82-headless.log). Browser/screenshots skipped at the owner's request; game
+  playtesting remains open. No simulation/worldgen changes; no commit.
+
 ## 2026-10-28: t94 dev console discovery and keyboard ease of use (Codex)
 
 - Added case/space-insensitive material lookup, three close giveable suggestions and
diff --git a/src/sim/devconsole.js b/src/sim/devconsole.js
index 58a3871..ed9fa13 100644
--- a/src/sim/devconsole.js
+++ b/src/sim/devconsole.js
@@ -26,7 +26,13 @@ function devError(text) { return Object.assign([text], { error: true }); }
 function devName(text) { return text.toLowerCase().replace(/\s+/g, ''); }
 function devGiveable(id) { return id !== EMPTY && PH[id] !== PH_GAS && (PH[id] !== PH_SOLID || !!YLD[id]); }
 function devMaterialList(text = '') {
-  return Object.entries(DEV_MATERIALS).filter(([key, id]) => devGiveable(id) && (devName(key).includes(devName(text)) || devName(MD[id].name).includes(devName(text))));
+  const keys = new Map(Object.entries(DEV_MATERIALS).map(([key, id]) => [id, key]));
+  const list = [], name = devName(text);
+  for (let id = 1; id < NMAT; id++) {
+    const key = keys.get(id) || '';
+    if (devGiveable(id) && (devName(key).includes(name) || devName(MD[id].name).includes(name))) list.push([key, id]);
+  }
+  return list;
 }
 // Edit distance is only used on a console error, never in the simulation tick.
 function devDistance(a, b) {
@@ -83,12 +89,12 @@ function devComplete(text, previous) {
 const DEV_MATERIALS = { EMPTY, GRASS, DIRT, LDIRT, SAND, GRAVEL, CLAY, STONE, GRANITE, BASALT, WOOD, LEAVES, COALV, COAL, CUV, CUORE, FEV, FEORE, ASH, SLAG, BRICK, GLASS, COPPER, IRON, STEEL, WATER, MAGMA, MCU, MFE, MST, MGL, STEAM, SMOKE, FIRE, BELTL, BELTR, SHAFT, GATE, HULL, SPRING, RSTONE, RGRAN, RBAS, LCLAY, LWOOD, RBRICK, CULLET, SCRCU, SCRFE, SCRST, BARCU, BARFE, BARST, ACORN, CHARCOAL, SNOW, ICE, SNV, SNORE, TIN, MSN, SCRSN, BARSN, ZNV, ZNORE, ZINC, MZN, SCRZN, BARZN, AGV, AGORE, SILVER, MAG, SCRAG, BARAG, AUV, AUORE, GOLD, MAU, SCRAU, BARAU, BRONZE, MBZ, SCRBZ, BARBZ, BRASS, MBS, SCRBS, BARBS, DOCKW, MSLAG, PIPE, BARGL, CUTST, BARSB, GRINDER, SAWB, PLANK, PRESSB, GREENB, BARBR, RACKB };
 function devMaterial(name) {
   name = devName(name);
-  const ids = Object.entries(DEV_MATERIALS);
-  const internal = ids.find(([key]) => devName(key) === name);
+  const internal = Object.entries(DEV_MATERIALS).find(([key]) => devName(key) === name);
   if (internal) return internal[1];
+  const ids = devMaterialList();
   const exact = ids.filter(([, id]) => devName(MD[id].name) === name);
   const matches = [...new Set((exact.length ? exact : ids.filter(([key, id]) => devName(key).startsWith(name) || devName(MD[id].name).startsWith(name))).map(([, id]) => id))];
-  return matches.length === 1 ? matches[0] : matches.length ? `Ambiguous material: ${matches.map(id => MD[id].name + ' (' + ids.find(([, m]) => m === id)[0] + ')').join(', ')}.` : 'Unknown material. Did you mean: ' + devSuggestions(name) + '? Use materials to list names.';
+  return matches.length === 1 ? matches[0] : matches.length ? `Ambiguous material: ${matches.map(id => { const key = ids.find(([, m]) => m === id)[0]; return MD[id].name + (key ? ' (' + key + ')' : ''); }).join(', ')}.` : 'Unknown material. Did you mean: ' + devSuggestions(name) + '? Use materials to list names.';
 }
 function devCommand(text, cursor) {
   if (typeof text !== 'string' || !text.trim()) return ['Type help to list commands.'];
@@ -105,7 +111,7 @@ function devCommand(text, cursor) {
     return ['Usage: ' + def[0], 'Example: ' + def[1]];
   }
   if (cmd === 'materials') {
-    const lines = devMaterialList(args.join(' ')).map(([key, id]) => MD[id].name + ' (' + key + ')');
+    const lines = devMaterialList(args.join(' ')).map(([key, id]) => MD[id].name + (key ? ' (' + key + ')' : ''));
     return lines.length ? lines : ['No matching materials.'];
   }
   if (cmd === 'clear') return args.length ? usage() : Object.assign([], { clear: true });
diff --git a/test/t_dev_console.js b/test/t_dev_console.js
index 874c8b4..77f75a2 100644
--- a/test/t_dev_console.js
+++ b/test/t_dev_console.js
@@ -74,6 +74,24 @@ check('give turns rock into its rubble and says so', run(`(() => { enableDevCons
 check('give refuses things that cannot be in a bag', run(`(() => { enableDevConsole(); const out = devCommand('give steam 5').join(' '); return /cannot go in the bag/.test(out) && bag[STEAM] === 0; })()`));
 
 check('material matching ignores spaces and case', run("devMaterial('CoPpErOrE') === CUORE && devMaterial('copper bar') === BARCU"));
+const withoutAlias = run(`(() => {
+  const saved = DEV_MATERIALS.CUORE;
+  delete DEV_MATERIALS.CUORE;
+  try {
+    const before = bag[CUORE];
+    devCommand('give CoPpEr OrE 7');
+    return {
+      lookup: devMaterial('CoPpEr OrE') === CUORE && bag[CUORE] === before + 7,
+      prefix: devMaterial('copperor').startsWith('Ambiguous material:') && devMaterial('copperor').includes(', Copper ore.'),
+      list: devMaterialList('CoPpErOrE').some(([, id]) => id === CUORE),
+      suggestions: devSuggestions('coperore').includes(MD[CUORE].name),
+      completion: devComplete('give copperore 25').matches.includes('give Copper ore 25')
+    };
+  } finally { DEV_MATERIALS.CUORE = saved; }
+})()`);
+for (const [feature, works] of Object.entries(withoutAlias)) {
+  check('display-name ' + feature + ' works without an internal alias', works);
+}
 check('unknown material suggests close giveable names', /Did you mean:.*Copper ore/i.test(command('give coperore')[0]));
 check('materials lists giveable names with internal names', command('materials').some(s => /Copper ore.*CUORE/.test(s)) && !command('materials').some(s => /STEAM/.test(s)));
 check('materials filtering ignores spaces and case', command('materials CoPpErOrE').every(s => /Copper ore/i.test(s)) && command('materials copperore').some(s => /CUORE/.test(s)));