v0.1.0: first tagged release

First tagged release. The compiler can lex and parse a chain manifest into an AST. No codegen or runtime yet; those land in subsequent milestones.

Added

• Repository scaffolding: README, LICENSE (Apache-2.0), DESIGN.md, CONTRIBUTING.md, CODE_OF_CONDUCT.md, SECURITY.md, issue and PR templates, CHANGELOG.
• Brand assets in .github/: mark + wordmark lockup, light and dark variants.
• Example .cv files in examples/: minimal chain manifest, multi-VM chain, counter module, token module, custom consensus protocol.
• Compiler bootstrap in C11 (compiler/): Makefile, cleavec binary with --version, --help, --tokens <file.cv>, and --ast <file.cv> commands.
• Lexer covering keywords, identifiers, integer literals (decimal, hex, binary, with _ separators), string and character literals, single and multi-character punctuation, // line and /* */ block comments, source line and column tracking, error recovery on unknown characters. Lexes all examples/*.cv with zero ERROR tokens.
• AST node definitions (compiler/include/ast.h): tagged-union AstNode covering 28 kinds across declarations, types, expressions, and statements. Source spans on every node. Memory is malloc-and-leak by design for v0; documented in compiler/src/ast.c.
• ast_dump pretty-printer producing readable indented output.
• Recursive-descent parser (compiler/src/parser.c) for the chain { } block: subsystem assignments, named and generic types, keyword and positional type parameters, and anonymous set literals like {cpu, storage, witness}. Error reporting with source line and column on missing tokens.
• Hand-rolled testing harness (compiler/tests/test.h, ~60 lines). Three test binaries: lexer_test.c (224 assertions), ast_test.c (58 assertions), parser_test.c (47 assertions). 329 total assertions across 60 tests.
• Microbenchmark harness (compiler/bench/bench.h). Lexer and parser benches with baseline numbers documented in compiler/bench/README.md.
• CI workflow building the compiler, running the test suite, and running benchmarks on every push and PR. Bench results visible in workflow logs.
• Branch protection ruleset on main: required PR review, required CI check, linear history, signed commits, no force push, no deletion. OrganizationAdmin bypass for emergency direct pushes.
• GitHub Discussions enabled. Milestones (v0.1, v0.2, v0.3, v0.4). Labels (compiler, stdlib, tooling, design). 14 tracking issues across milestones.

Notes

• The compiler does not yet produce executable output. cleavec --tokens prints token streams; cleavec --ast prints parsed AST. Codegen lands in v0.3.
• Standard library protocol designs (consensus, gas, state, effects, DA) are open RFCs in the v0.2 milestone.
• .cv is the canonical file extension. Switched from .cleave during early bootstrap; no public history of the older extension.