.gitignore

@@ -33,3 +33,8 @@ c65gm
 *.sym
 *.prg
 *.s
+
+.cache/
+.env
+.local/
+opencode-config/package-lock.json

AGENTS.md

@@ -0,0 +1,167 @@
+# c65gm Agent Instructions
+
+## Project Overview
+c65gm is a high-level 6502 cross-compiler targeting the ACME Cross-Assembler for Commodore 64 and similar 6502-based platforms. It provides a more expressive language for writing 6502 assembly programs with modern programming constructs.
+
+## Key Documentation Locations
+
+### Primary Documentation
+1. **README.md** - Project overview, building, usage, and requirements
+2. **language.md** - Complete language reference with examples (1091 lines)
+3. **syntax.md** - Syntax rules and preprocessor directives (646 lines)
+4. **commands.md** - Complete command reference (776 lines)
+
+### Code Structure
+- **main.go** - Entry point and command-line interface
+- **internal/compiler/** - Core compiler implementation
+- **internal/preproc/** - Preprocessor implementation
+- **internal/commands/** - Individual command implementations
+- **internal/utils/** - Utility functions
+- **lib/** - Standard library files for C64 development
+- **examples/** - Example programs demonstrating language features
+
+### Standard Library (lib/)
+- **c64start.c65** - Required for C64 executables (BASIC loader setup)
+- **c64defs.c65** - C64 hardware definitions (colors, addresses, etc.)
+- **c64kernal.c65** - Kernal routine wrappers
+- **c64scr.c65** - Screen manipulation functions
+- **string.c65** - String handling functions
+- **memlib.c65** - Memory management functions
+- **fat16/** - FAT16 filesystem support
+- **koalalib.c65** - Koala graphics support
+
+## Language Features to Note
+
+### Key Concepts
+1. **Type system**: BYTE (8-bit) and WORD (16-bit) variables with scope resolution
+2. **Functions**: Named functions with parameters and call graph analysis
+3. **Control flow**: IF/ENDIF, WHILE/WEND, FOR loops, SWITCH/CASE
+4. **Memory operations**: PEEK/POKE/PEEKW/POKEW with zero-page optimization
+5. **Preprocessor**: File inclusion, macros, conditional compilation, Starlark scripting
+6. **Optimizations**: Constant folding, self-assignment detection
+7. **Safety features**: Compile-time detection of overlapping absolute addresses
+
+### Important Syntax Rules
+1. **No operator precedence**: Expressions evaluate strictly left-to-right
+2. **Memory-mapped variables**: Use `@` to place variables at specific addresses
+3. **Constants**: Prefer `BYTE CONST`/`WORD CONST` over `#DEFINE`
+4. **Zero-page optimization**: Place frequently accessed pointers in zero page ($00-$FF)
+5. **Include guards**: Always use `#IFNDEF` in library files
+
+### Special Blocks
+1. **ASM blocks**: Inline assembly code
+2. **SCRIPT blocks**: Starlark code for compile-time code generation
+3. **SCRIPT LIBRARY blocks**: Reusable Starlark functions
+4. **SCRIPT MACRO blocks**: Parameterized macros for inline expansion
+
+## Common Patterns
+
+### Program Structure
+```c65
+#INCLUDE <c64start.c65>
+#INCLUDE <c64defs.c65>
+
+GOTO start  // Jump over function definitions
+
+// Variables and functions here
+
+LABEL start  // Program entry point
+main()
+```
+
+### Library Structure
+```c65
+#IFNDEF __MY_LIBRARY
+#DEFINE __MY_LIBRARY = 1
+
+GOTO lib_mylib_skip
+
+// Library code here
+
+LABEL lib_mylib_skip
+#IFEND
+```
+
+### Memory Operations
+- Use `PEEK`/`POKE` for byte access
+- Use `PEEKW`/`POKEW` for word (16-bit) access
+- For indexed access, address must be a WORD variable in zero page
+
+## Development Guidelines
+
+### Environment Constraints
+**IMPORTANT**: The agent runs in a Docker container without access to compilers, testing tools, or external build systems. All compilation and testing must be performed by the user. The agent can only:
+1. Read and analyze source code
+2. Make code changes
+3. Provide instructions for the user to compile and test
+
+### File Access Restrictions
+**CRITICAL**: The agent must only access normal project files within the current working directory. The agent must NEVER:
+1. Look at files outside the project directory (e.g., `/tmp/`, `/etc/`, `/home/`, etc.)
+2. Read or attempt to access system files, environment files (`.env`), or configuration files outside the project
+3. Search for or read files containing secrets, credentials, or sensitive information
+4. Attempt to access files in parent directories or unrelated paths
+
+All file operations must be restricted to the project's source code and documentation files only.
+
+### When Modifying the Compiler
+1. Check `internal/commands/` for command implementations
+2. Check `internal/compiler/` for core compiler logic
+3. Check `internal/preproc/` for preprocessor functionality
+4. **DO NOT run tests** - provide instructions for the user to run tests
+
+### When Adding New Features
+1. Follow existing patterns in command implementations
+2. Add comprehensive tests
+3. Update documentation in appropriate .md files
+4. Consider adding examples in `examples/` directory
+
+### Testing
+**IMPORTANT**: The agent cannot run tests. Provide these instructions to the user:
+- Run all tests: `go test ./...`
+- Run specific package tests: `go test ./internal/compiler`
+- Test with verbose output: `go test -v ./...`
+
+## Common Pitfalls
+
+1. **Expression evaluation**: Remember no operator precedence
+2. **Zero-page requirements**: Indexed memory operations require zero-page addresses
+3. **Include guards**: Essential for library files to prevent multiple inclusion
+4. **Program structure**: Always use `GOTO start` to jump over function definitions
+5. **String handling**: Strings are passed as pointers to WORD parameters
+
+## Quick Reference
+
+### Compilation
+**IMPORTANT**: The agent cannot compile code. Provide these instructions to the user:
+```bash
+./c65gm -in input.c65 -out output.asm
+acme -f cbm -o output.prg output.asm
+```
+
+### Environment Variables
+- `C65LIBPATH`: Library search path for `#INCLUDE <file>`
+
+### Editor Support
+- Kate syntax: `editor_syntaxes/kate/`
+- Sublime syntax: `editor_syntaxes/sublime/`
+
+## Where to Look for Specifics
+
+### Language Syntax
+- `language.md`: Sections 1-10 cover all language features
+- `syntax.md`: Detailed syntax rules and preprocessor directives
+- `commands.md`: Complete command reference with examples
+
+### Implementation Details
+- `internal/compiler/compiler.go`: Main compiler logic
+- `internal/commands/*.go`: Individual command implementations
+- `internal/preproc/preproc.go`: Preprocessor implementation
+
+### Examples
+- `examples/`: Working example programs
+- `lib/`: Standard library usage examples
+
+### Testing
+- `*_test.go` files throughout the codebase
+- `examples/`: Functional test programs

Dockerfile

@@ -1,6 +0,0 @@
-FROM node:18-alpine
-WORKDIR /app
-RUN apk add --no-cache bash
-ENV SHELL=/bin/bash
-RUN npm install -g @anthropic-ai/claude-code
-CMD ["claude"]

claude_code_docker.sh

@@ -1,4 +0,0 @@
-#!/bin/bash
-export DOCKER_UID=$(id -u)
-export DOCKER_GID=$(id -g)
-docker compose run --rm claude-c65gm

docker-compose.yml

@@ -1,13 +1,15 @@
 services:
-  claude-c65gm:
+  opencode-deepseek-c65gm:
-    build: .
+    #image: ghcr.io/anomalyco/opencode:0.0.0-beta-202604081541
+    image: ghcr.io/anomalyco/opencode:latest
     user: "${DOCKER_UID}:${DOCKER_GID}"
+    working_dir: /app
     volumes:
       - .:/app
+      - ./opencode-config:/app/.config/opencode
+      - ./opencode-data:/home/opencode/.local/share/opencode
     environment:
-      - ANTHROPIC_API_KEY=${ANTHROPIC_API_KEY}
+      - DEEPSEEK_API_KEY=${DEEPSEEK_API_KEY}
-      - CLAUDE_CONFIG_DIR=/app/.claude
       - HOME=/app
-      - DISABLE_AUTOUPDATER=1
     stdin_open: true
     tty: true

internal/commands/add.go

@@ -68,13 +68,7 @@ func (c *AddCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	if strings.ToUpper(params[0]) == "ADD" {

internal/commands/and.go

@@ -68,13 +68,7 @@ func (c *AndCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	if strings.ToUpper(params[0]) == "AND" {

internal/commands/byte.go

@@ -55,13 +55,7 @@ func (c *ByteCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	scope := ctx.FunctionHandler.CurrentFunction()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(ctx.CurrentScope())
-		sym := ctx.SymbolTable.Lookup(name, ctx.CurrentScope())
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	switch paramCount {
 	case 2:

internal/commands/case.go

@@ -39,13 +39,7 @@ func (c *CaseCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse the case value
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/decr.go

@@ -97,13 +97,7 @@ func (c *DecrCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	}
 
 	// Old syntax allows absolute addresses
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		s := ctx.SymbolTable.Lookup(name, scope)
-		if s != nil && s.IsConst() {
-			return int64(s.Value), true
-		}
-		return 0, false
-	}
 
 	val, evalErr := utils.EvaluateExpression(targetParam, constLookup)
 	if evalErr != nil {

internal/commands/for.go

@@ -48,13 +48,7 @@ func (c *ForCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse variable
 	varName := params[1]

internal/commands/gosub.go

@@ -70,13 +70,7 @@ func (c *GosubCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContex
 
 	scope := ctx.CurrentScope()
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse target (param 2)
 	targetParam := params[1]

internal/commands/goto.go

@@ -52,13 +52,7 @@ func (c *GotoCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	targetParam := params[1]
 	scope := ctx.CurrentScope()
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try ParseOperandParam - handles variables, constants, expressions
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/if.go

@@ -40,13 +40,7 @@ func (c *IfCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse param1
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/incr.go

@@ -97,13 +97,7 @@ func (c *IncrCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	}
 
 	// Old syntax allows absolute addresses
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		s := ctx.SymbolTable.Lookup(name, scope)
-		if s != nil && s.IsConst() {
-			return int64(s.Value), true
-		}
-		return 0, false
-	}
 
 	val, evalErr := utils.EvaluateExpression(targetParam, constLookup)
 	if evalErr != nil {

internal/commands/let.go

@@ -62,13 +62,7 @@ func (c *LetCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	if strings.ToUpper(params[0]) == "LET" {

internal/commands/or.go

@@ -68,13 +68,7 @@ func (c *OrCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	if strings.ToUpper(params[0]) == "OR" {

internal/commands/origin.go

@@ -36,13 +36,7 @@ func (c *OriginCommand) Interpret(line preproc.Line, ctx *compiler.CompilerConte
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	val, err := utils.EvaluateExpression(params[1], constLookup)
 	if err != nil {

internal/commands/peek.go

@@ -115,13 +115,7 @@ func (c *PeekCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	// Parse address - may have [offset]
 	baseAddr, offsetParam := parseOffset(addrParam)
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try to parse base address
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/peekw.go

@@ -116,13 +116,7 @@ func (c *PeekWCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContex
 	// Parse address - may have [offset]
 	baseAddr, offsetParam := parseOffsetW(addrParam)
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try to parse base address
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/point.go

@@ -74,13 +74,7 @@ func (c *PointerCommand) Interpret(line preproc.Line, ctx *compiler.CompilerCont
 	// Parse target (param 4)
 	targetParam := params[3]
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try ParseOperandParam - handles variables, constants, expressions
 	varName, _, value, isVar, err := compiler.ParseOperandParam(

internal/commands/poke.go

@@ -83,13 +83,7 @@ func (c *PokeCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	addrParam := params[1]
 	baseAddr, offsetParam := parsePOKEOffset(addrParam)
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try to parse base address
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/pokew.go

@@ -82,13 +82,7 @@ func (c *PokeWCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContex
 	addrParam := params[1]
 	baseAddr, offsetParam := parsePOKEWOffset(addrParam)
 
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try to parse base address
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/subtr.go

@@ -71,13 +71,7 @@ func (c *SubtractCommand) Interpret(line preproc.Line, ctx *compiler.CompilerCon
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	kw := strings.ToUpper(params[0])

internal/commands/switch.go

@@ -33,13 +33,7 @@ func (c *SwitchCommand) Interpret(line preproc.Line, ctx *compiler.CompilerConte
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse the switch variable/expression
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/while.go

@@ -41,13 +41,7 @@ func (c *WhileCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContex
 	}
 
 	scope := ctx.CurrentScope()
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse param1
 	varName, varKind, value, isVar, err := compiler.ParseOperandParam(

internal/commands/word.go

@@ -57,13 +57,7 @@ func (c *WordCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext
 	scope := ctx.FunctionHandler.CurrentFunction()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(ctx.CurrentScope())
-		sym := ctx.SymbolTable.Lookup(name, ctx.CurrentScope())
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	switch paramCount {
 	case 2:

internal/commands/xor.go

@@ -68,13 +68,7 @@ func (c *XorCommand) Interpret(line preproc.Line, ctx *compiler.CompilerContext)
 	scope := ctx.CurrentScope()
 
 	// Create constant lookup function
-	constLookup := func(name string) (int64, bool) {
+	constLookup := ctx.SymbolTable.ConstantLookupFunc(scope)
-		sym := ctx.SymbolTable.Lookup(name, scope)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Determine syntax and parse accordingly
 	if strings.ToUpper(params[0]) == "XOR" {

internal/compiler/funchandler.go

@@ -343,12 +343,7 @@ func (fh *FunctionHandler) HandleFuncCall(line preproc.Line) ([]string, error) {
 		}
 
 		// Use ParseOperandParam for variables, constants, and expressions
-		constLookup := func(name string) (int64, bool) {
+		constLookup := fh.symTable.ConstantLookupFunc(fh.currentFuncs)
-			if sym := fh.symTable.Lookup(name, fh.currentFuncs); sym != nil && sym.IsConst() {
-				return int64(sym.Value), true
-			}
-			return 0, false
-		}
 
 		_, _, value, isVar, err := ParseOperandParam(
 			arg, fh.symTable, fh.currentFuncs, constLookup)
@@ -632,13 +627,7 @@ func (fh *FunctionHandler) parseImplicitDecl(decl string, funcName string) error
 	}
 
 	// Create constant lookup function for address evaluation
-	constLookup := func(name string) (int64, bool) {
+	constLookup := fh.symTable.ConstantLookupFunc([]string{funcName})
-		sym := fh.symTable.Lookup(name, []string{funcName})
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Parse address (supports $hex and decimal) using EvaluateExpression
 	addr, err := utils.EvaluateExpression(addrStr, constLookup)

internal/compiler/scriptexec.go

@@ -177,13 +177,7 @@ func evaluateMacroArg(arg string, ctx *CompilerContext) (starlark.Value, error)
 	arg = strings.TrimSpace(arg)
 
 	// Create lookup function for constants
-	lookup := func(name string) (int64, bool) {
+	lookup := ctx.SymbolTable.ConstantLookupFunc(nil)
-		sym := ctx.SymbolTable.Lookup(name, nil)
-		if sym != nil && sym.IsConst() {
-			return int64(sym.Value), true
-		}
-		return 0, false
-	}
 
 	// Try to evaluate as expression (number, constant, arithmetic)
 	val, err := utils.EvaluateExpression(arg, lookup)

internal/compiler/symboltable.go

@@ -253,6 +253,24 @@ func (st *SymbolTable) ExpandName(name string, currentScopes []string) string {
 	return name
 }
 
+// LookupConstant looks up a constant by name and returns its value if found
+// Returns (value, true) if symbol exists and is a constant, (0, false) otherwise
+func (st *SymbolTable) LookupConstant(name string, currentScopes []string) (int64, bool) {
+	sym := st.Lookup(name, currentScopes)
+	if sym != nil && sym.IsConst() {
+		return int64(sym.Value), true
+	}
+	return 0, false
+}
+
+// ConstantLookupFunc returns a ConstantLookup function that captures the current scopes
+// This can be used directly with utils.EvaluateExpression
+func (st *SymbolTable) ConstantLookupFunc(currentScopes []string) func(string) (int64, bool) {
+	return func(name string) (int64, bool) {
+		return st.LookupConstant(name, currentScopes)
+	}
+}
+
 // String representation for debugging
 func (s *Symbol) String() string {
 	var parts []string

opencode-config/opencode.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "https://opencode.ai/config.json",
+  "agent": {
+    "plan": {
+      "model": "deepseek/deepseek-reasoner",
+      "description": "Planning and architecture analysis using DeepSeek Reasoner"
+    },
+    "build": {
+      "model": "deepseek/deepseek-chat",
+      "description": "Implementation and coding using DeepSeek Chat"
+    }
+  }
+}

opencode-docker.sh

@@ -0,0 +1,12 @@
+#!/bin/bash
+set -euo pipefail
+
+export DOCKER_UID=$(id -u)
+export DOCKER_GID=$(id -g)
+
+# Load from .env if it exists
+if [ -f .env ]; then
+  export $(grep -v '^#' .env | xargs)
+fi
+
+docker compose run --rm opencode-deepseek-c65gm