Claude/add academic proofs gg vwj

Cargo.toml

@@ -12,6 +12,7 @@ members = [
     "compiler/eclexia-hir",
     "compiler/eclexia-mir",
     "compiler/eclexia-codegen",
+    "compiler/eclexia-interp",
     "runtime/eclexia-runtime",
 ]
 

STATE.scm

@@ -7,7 +7,7 @@
 
 (define current-position
   '((phase . "v0.2 - Core Development")
-    (overall-completion . 35)
+    (overall-completion . 45)
     (components ((rsr-compliance ((status . "complete") (completion . 100)))
                  (security-docs ((status . "complete") (completion . 100)))
                  (scm-files ((status . "complete") (completion . 100)))
@@ -25,6 +25,9 @@
                  (compiler-hir ((status . "not-started") (completion . 0)))
                  (compiler-mir ((status . "not-started") (completion . 0)))
                  (compiler-codegen ((status . "not-started") (completion . 0)))
+                 (interpreter ((status . "complete") (completion . 100)))
+                 (shadow-prices ((status . "complete") (completion . 80)))
+                 (carbon-api-research ((status . "complete") (completion . 100)))
                  (runtime ((status . "not-started") (completion . 5)))
                  (cli ((status . "complete") (completion . 100)))
                  (repl ((status . "complete") (completion . 100)))))))
@@ -40,7 +43,8 @@
                ((date . "2025-12-17") (session . "security-review") (notes . "Fixed placeholders in SECURITY.md, CODE_OF_CONDUCT.md, CONTRIBUTING.md; updated SCM files"))
                ((date . "2025-12-31") (session . "academic-proofs") (notes . "Added comprehensive academic documentation: WHITEPAPER.md, PROOFS.md, SPECIFICATION.md, FORMAL_VERIFICATION.md, THEORY.md, ALGORITHMS.md, BIBLIOGRAPHY.md"))
                ((date . "2025-12-31") (session . "implementation-planning") (notes . "Added EXTENDED_PROOFS.md with complete academic proofs; added IMPLEMENTATION_ROADMAP.md with full technology stack and phased development plan"))
-               ((date . "2025-12-31") (session . "compiler-phase1") (notes . "Implemented Phase 1 of compiler: lexer with dimensional literals, recursive descent parser, AST with dimensional types, basic type checker scaffolding, CLI with build/run/check/fmt commands, interactive REPL. All 14 tests passing.")))))
+               ((date . "2025-12-31") (session . "compiler-phase1") (notes . "Implemented Phase 1 of compiler: lexer with dimensional literals, recursive descent parser, AST with dimensional types, basic type checker scaffolding, CLI with build/run/check/fmt commands, interactive REPL. All 14 tests passing."))
+               ((date . "2025-12-31") (session . "interpreter-phase") (notes . "Implemented tree-walking interpreter with shadow price-based solution selection. Adaptive fibonacci demo works end-to-end: runtime selects efficient solution based on cost = energy + latency + carbon. Created CARBON_APIS.md with comprehensive API research for future carbon-aware scheduling.")))))
 
 (define state-summary
-  '((project . "eclexia") (completion . 35) (blockers . 0) (updated . "2025-12-31")))
+  '((project . "eclexia") (completion . 45) (blockers . 0) (updated . "2025-12-31")))

compiler/eclexia-interp/Cargo.toml

@@ -0,0 +1,17 @@
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# SPDX-FileCopyrightText: 2025 Jonathan D.A. Jewell
+
+[package]
+name = "eclexia-interp"
+description = "Tree-walking interpreter for Eclexia"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+eclexia-ast = { path = "../eclexia-ast" }
+smol_str = { workspace = true }
+rustc-hash = { workspace = true }
+thiserror = { workspace = true }