refactor(silversight): move to correct location + set no-write on Research Stack

SilverSight modules moved from Semantics/Semantics/SilverSight/ to
SilverSight/SilverSight/ (separate directory, same lake project).

Changes:
- SilverSight Lean modules: Schema, WireFormat, ProductSchema,
  ProductWireFormat, Receipt, Bind → 0-Core-Formalism/lean/SilverSight/
- Imports updated: Semantics.SilverSight.* → SilverSight.*
- Namespace updated: Semantics.SilverSight → SilverSight
- Cross-project imports preserved: Semantics.FixedPoint, open Semantics.FixedPoint
- lakefile.toml: SilverSight lean_lib now uses srcDir = ../SilverSight
- AGENTS.md: READ-ONLY notice added — Research Stack is archived,
  all new formal work goes to SilverSight
- SilverSight/AGENTS.md: clean-slate operating contract

Build: SilverSight 3307 jobs, 0 errors
Build: Compiler 3314 jobs, 0 errors

0-Core-Formalism/lean/Semantics/Semantics/SilverSight.lean

@@ -1,8 +0,0 @@
-import Semantics.SilverSight.Schema
-import Semantics.SilverSight.WireFormat
-import Semantics.SilverSight.ProductSchema
-import Semantics.SilverSight.ProductWireFormat
-import Semantics.SilverSight.Receipt
-import Semantics.SilverSight.Bind
-
-namespace Semantics.SilverSight

0-Core-Formalism/lean/Semantics/lakefile.toml

@@ -52,11 +52,13 @@ name = "ExtensionScaffold"
 [[lean_lib]]
 name = "Biology"
 
-# ── SilverSight: schema/layout/wireformat core ──────────────────────────────
+# ── SilverSight: clean-slate rebase ─────────────────────────────────────────
-# Phase 1 core: product-type encoders, Receipt/Bind composition primitive.
+# Lives at 0-Core-Formalism/lean/SilverSight/ (separate from Semantics tree).
+# Imports Semantics.FixedPoint cross-project. Build: lake build SilverSight
 [[lean_lib]]
 name = "SilverSight"
-roots = ["Semantics.SilverSight"]
+srcDir = "../SilverSight"
+roots = ["SilverSight"]
 
 # OTOM external proofs — uncomment when resolving sorries.
 # Build: lake build OTOMProofs

0-Core-Formalism/lean/SilverSight/AGENTS.md

@@ -0,0 +1,63 @@
+# AGENTS.md — SilverSight
+
+**SilverSight is the clean-slate rebase of the Research Stack.**
+
+## Location
+
+```
+0-Core-Formalism/lean/SilverSight/
+  SilverSight/
+    Schema.lean
+    WireFormat.lean
+    ProductSchema.lean
+    ProductWireFormat.lean
+    Receipt.lean
+    Bind.lean
+  SilverSight.lean          ← root import
+```
+
+## Rules
+
+1. **SilverSight is the ONLY target for new formal work.** Do NOT add new modules to `0-Core-Formalism/lean/Semantics/Semantics/`. All new Lean code goes here.
+
+2. **Imports from Semantics are allowed** (cross-project): `import Semantics.FixedPoint`, `import Semantics.Spectrum`, etc.
+
+3. **No `sorry` in committed code.** Same rule as the Research Stack.
+
+4. **No `Float` in compute paths.** Use `Q0_16` or `Q16_16`.
+
+5. **Build gate:** `lake build SilverSight` must pass (3307 jobs, 0 errors as of 2026-06-22).
+
+6. **Every new module needs:**
+   - `@[simp]` theorems for key computations
+   - `#eval` witnesses with expected output in comments
+   - A docstring explaining the module's purpose
+
+7. **The claim manifest** lives at `6-Documentation/docs/claims/manifest_v1.json` (shared with Research Stack docs).
+
+## What Belongs Here
+
+- Schema/Layout/WireFormat core (YaFF-inspired)
+- Product-type encoders
+- Receipt/Bind composition primitive
+- DynamicCanal physics (when ported)
+- RRC corpus and PIST pipeline (when ported)
+- Compression theorems (when ported)
+
+## What Does NOT Belong Here
+
+- Research Stack legacy modules (stay in `Semantics/Semantics/`)
+- Python shims (stay in `4-Infrastructure/shim/`)
+- Documentation (stay in `6-Documentation/`)
+- Extraction JSONs (stay in `extraction/`)
+
+## Current Status
+
+| Module | Status | Sorry |
+|--------|--------|-------|
+| Schema.lean | Complete | 0 |
+| WireFormat.lean | Complete | 0 |
+| ProductSchema.lean | Complete | 0 |
+| ProductWireFormat.lean | Complete | 0 |
+| Receipt.lean | Complete | 0 |
+| Bind.lean | Complete | 0 |

0-Core-Formalism/lean/SilverSight/SilverSight.lean

@@ -0,0 +1,8 @@
+import SilverSight.Schema
+import SilverSight.WireFormat
+import SilverSight.ProductSchema
+import SilverSight.ProductWireFormat
+import SilverSight.Receipt
+import SilverSight.Bind
+
+namespace Semantics.SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/Bind.lean

@@ -1,6 +1,6 @@
-import Semantics.SilverSight.Receipt
+import SilverSight.Receipt
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 open Semantics.FixedPoint.Q16_16
@@ -111,4 +111,4 @@ def r3 := mkReceipt .validate (Q16_16.ofInt 20) "wellformed" 3
 #eval (bindReceipt r1 r2).cost        -- expected: 5242880 (Q16_16 of 80)
 #eval (bindReceipt r1 r2).wellFormed  -- expected: true
 
-end Semantics.SilverSight
+end SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/ProductSchema.lean

@@ -1,6 +1,6 @@
-import Semantics.SilverSight.Schema
+import SilverSight.Schema
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 
@@ -45,4 +45,4 @@ theorem prod_wellFormed [Schema α] [Schema β] (a : α) (b : β) :
 #eval Schema.byteSize ((UInt8 × UInt8) × UInt32)  -- expected: 6
 #eval Schema.byteSize (UInt8 × UInt8 × UInt32)    -- expected: 6
 
-end Semantics.SilverSight
+end SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/ProductWireFormat.lean

@@ -1,7 +1,7 @@
-import Semantics.SilverSight.WireFormat
+import SilverSight.WireFormat
-import Semantics.SilverSight.ProductSchema
+import SilverSight.ProductSchema
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 
@@ -64,4 +64,4 @@ def boolPairRowMajor : WireFormat (Bool × Bool) Layout.rowMajor where
 #eval uint8BoolRowMajor.decode (ByteArray.mk #[42, 1])  -- expected: some (42, true)
 #eval Schema.byteSize (UInt8 × Bool)  -- expected: 2
 
-end Semantics.SilverSight
+end SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/Receipt.lean

@@ -1,6 +1,6 @@
 import Semantics.FixedPoint
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 open Semantics.FixedPoint.Q16_16
@@ -74,4 +74,4 @@ def Receipt.sharesInvariant (r1 r2 : Receipt) : Bool := r1.invariant == r2.invar
 #eval (mkReceipt .encode Q16_16.zero "A" 1).sharesInvariant (mkReceipt .decode Q16_16.zero "A" 2)  -- expected: true
 #eval (mkReceipt .encode Q16_16.zero "A" 1).sharesInvariant (mkReceipt .decode Q16_16.zero "B" 2)  -- expected: false
 
-end Semantics.SilverSight
+end SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/Schema.lean

@@ -1,6 +1,6 @@
 import Semantics.FixedPoint
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 
@@ -65,4 +65,4 @@ instance : Schema Q0_16 where
 #eval Schema.byteSize Q16_16  -- expected: 4
 #eval Schema.byteSize Q0_16   -- expected: 2
 
-end Semantics.SilverSight
+end SilverSight

0-Core-Formalism/lean/SilverSight/SilverSight/WireFormat.lean

@@ -1,6 +1,6 @@
-import Semantics.SilverSight.Schema
+import SilverSight.Schema
 
-namespace Semantics.SilverSight
+namespace SilverSight
 
 open Semantics.FixedPoint
 
@@ -71,4 +71,4 @@ def boolRowMajor : WireFormat Bool Layout.rowMajor where
 #eval boolRowMajor.decode (boolRowMajor.encode true)   -- expected: some true
 #eval boolRowMajor.decode (boolRowMajor.encode false)  -- expected: some false
 
-end Semantics.SilverSight
+end SilverSight

AGENTS.md

@@ -2,6 +2,28 @@
 
 This file is the first stop for coding agents working in this repository.
 
+## ⛔ READ-ONLY NOTICE — SilverSight Has Replaced This Repo
+
+**The Research Stack is a READ-ONLY archive.** SilverSight is the clean-slate
+successor. All new formal work MUST go to `0-Core-Formalism/lean/SilverSight/`.
+
+| Action | Allowed? |
+|--------|----------|
+| Add new Lean modules to `Semantics/Semantics/` | **NO** → use `SilverSight/` |
+| Add new Python shims to `4-Infrastructure/shim/` | **NO** → use SilverSight shim dir |
+| Edit existing Research Stack files (bug fixes, doc updates) | **YES** |
+| Run `lake build` on existing modules | **YES** |
+| Run DB sync scripts | **YES** |
+| Add new AGENTS.md rules to Research Stack | **NO** → add to SilverSight |
+
+**Enforcement:** Any agent that adds new files to the Research Stack Lean tree
+(`0-Core-Formalism/lean/Semantics/Semantics/`) instead of SilverSight
+(`0-Core-Formalism/lean/SilverSight/`) is violating this contract.
+
+**SilverSight location:** `0-Core-Formalism/lean/SilverSight/`
+**SilverSight AGENTS.md:** `0-Core-Formalism/lean/SilverSight/AGENTS.md`
+**SilverSight build:** `lake build SilverSight` (from `0-Core-Formalism/lean/Semantics/`)
+
 ## Local Hermes Deployment (2026-06-20)
 
 Hermes Agent v0.14.0 is the primary chat/dashboard gateway, serving the