Migrate all project files from repo root into prj/<name>/

Moved all 40 existing projects' .prj/.dat files (Layer weights, training
batches, legacy .weights.dat/.test.dat artifacts) from the flat repo root
into their own prj/<name>/ folder via git mv, matching the new path
convention from the previous commit. Filenames are unchanged, only the
directory. Non-project files at root (CLAUDE.md, Makefile, batch/moby
text corpora, the stray Layer.0.training.mat) were left in place.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016K8Gu7Qejd11JbdiHZqYAs

prj/norb_small_16h/norb_small_16h.Layer.0.bh.dat

@@ -0,0 +1,3 @@
+ARMA_MAT_TXT_FN008
+1 10
+   6.5662423527007756e-03  -5.2203992145452563e-03   3.6172541583890981e-03  -7.4250989021618745e-03   6.3199389558181909e-03   6.2458994278407551e-03   8.9527194097453137e-03   2.4234391839914613e-03  -2.7956511578742945e-03  -4.5734444347841040e-03

prj/norb_small_16h/norb_small_16h.prj

@@ -0,0 +1,37 @@
+{
+	"stack" : 
+	{
+		"layers" : 
+		[
+			{
+				"id" : 0,
+				"name" : "Layer",
+				"numContext" : 0,
+				"numHidden" : 10,
+				"numVisibleX" : 96,
+				"numVisibleY" : 96,
+				"rbm" : 
+				{
+					"params" : 
+					{
+						"doGaussianHidden" : 1,
+						"doGaussianVisible" : 1,
+						"doRaoBlackwell" : 1,
+						"doSampleBatch" : 0,
+						"gibbsDoSampleHidden" : 0,
+						"gibbsDoSampleVisible" : 0,
+						"learningRate" : 9.9999997473787516e-06,
+						"miniBatchSize" : 100,
+						"momentum" : 0.90000000000000002,
+						"numEpochs" : 1000,
+						"numGibbs" : 3,
+						"weightDecay" : 0.0
+					}
+				}
+			}
+		],
+		"name" : "norb_small_16h",
+		"type" : 1,
+		"type_string" : "Deep"
+	}
+}