Rename spec files to Torah-faithful names per parshah

Each spec corresponds to a parshah of Shemot. The earlier names
were generic English (materials, operations, construction,
economic_model). Torah names them precisely:

- Shemot 25:2 — terumah (תרומה, root רום, "what is lifted")
- Shemot 27:20 — tamid (תמיד, "continual" — the lamp that never goes out)
- Shemot 35:1 — vayakhel (קהל, "assembled" — community-formed building)
- Shemot 38:21 — pekudei (פקד, "accounted" — every material counted)

Renames:
  shorashim_materials.md       → shorashim_terumah.md
  shorashim_operations.md      → shorashim_tamid.md
  shorashim_construction.md    → shorashim_vayakhel.md
  shorashim_economic_model.md  → shorashim_pekudei.md

Updated cross-references in:
- README.md (parshah table + repo tree, also fixed stale tree
  showing src/ and transcripts/ that no longer exist)
- AGENTS.md
- BUILD_KORBAN.md
- specs/shorashim_terumah.md (internal Document Registry)

Generic English is silver. Torah's words are gold (Mishlei 25:11).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

vav_pipeline/var/manna/today.json

@@ -0,0 +1,17 @@
+{
+  "date": "2026-03-23",
+  "hebrew_date": "5 Nisan 5786",
+  "parasha": "Tzav",
+  "provision": {
+    "compute_units": 1000,
+    "memory_mb": 32768,
+    "api_calls_external": 500,
+    "storage_delta_mb": 100,
+    "sanhedrin_panels_max": 5
+  },
+  "type": "regular",
+  "expires_at": "2026-03-24T00:00:00Z",
+  "written_by": "kohen",
+  "written_at": "2026-03-23T00:00:00Z",
+  "note": "Day 1 of milu'im. 5 Nisan — 9 days before Pesach. L1 verified. The washing is done."
+}