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/context33/context33.prj

@@ -0,0 +1,29 @@
+{
+   "stack" : {
+      "layers" : [
+         {
+            "id" : 0,
+            "name" : "Layer",
+            "numContext" : 128,
+            "numHidden" : 128,
+            "numVisibleX" : 1,
+            "numVisibleY" : 40,
+            "rbm" : {
+               "params" : {
+                  "doRaoBlackwell" : 1,
+                  "doSampleBatch" : 0,
+                  "gibbsDoSampleHidden" : 1,
+                  "gibbsDoSampleVisible" : 0,
+                  "learningRate" : 0.05000000074505806,
+                  "miniBatchSize" : 100,
+                  "momentum" : 0.5,
+                  "numEpochs" : 1000,
+                  "numGibbs" : 3,
+                  "weightDecay" : 0.0
+               }
+            }
+         }
+      ],
+      "name" : "context33"
+   }
+}