fix(vscode-ext): pass real callbacks to registerCommand (affinescript#35 P2)

[hyperpolymath]

The VS Code extension now compiles. Root cause was not the affinescript toolchain or upstream stdlib (those type-check fine on affinescript origin/main) — it was my-lang's own src/extension.affine using a stale Phase-1 contract.

Bug

registerCommand("my-lang.run", 0) passed an Int "wasm-table index", but the Phase-2 (#35) binding is:

pub extern fn registerCommand(name: String, handler: fn(Unit) -> Int) -> Disposable;

→ Unify.TypeMismatch ((Unit -> Int), Int); the extension would not build at all.

Fix

Handlers passed as real callbacks, mirroring affinescript's own examples/vscode_extension_minimal.affine:
registerCommand("my-lang.run", fn(u: Unit) => handler_run()) (×3); obsolete index comment replaced.

Verification

• affinescript compile --vscode-extension src/extension.affine -o out/extension.cjs → succeeds (tested against affinescript origin/main stdlib in an isolated worktree; the live affinescript clone was never touched).
• Regenerated out/extension.cjs passes node --check; src/index.cjs wires it via require("../out/extension.cjs").
• No affinescript repo change required — purely the my-lang port.

Builds on #58 (correct --vscode-extension invocation). With this, vsce package produces an installable .vsix (no Azure PAT needed; only vsce publish does).

Refs affinescript#35
Refs affinescript#64

🤖 Generated with Claude Code

[github-actions]

🔍 Hypatia Security Scan

Findings: 35 issues detected

Severity	Count
🔴 Critical	6
🟠 High	11
🟡 Medium	18

⚠️ Action Required: Critical security issues found!

View findings

[
  {
    "reason": "Issue in quality.yml",
    "type": "missing_workflow",
    "file": "quality.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "Issue in security-policy.yml",
    "type": "missing_workflow",
    "file": "security-policy.yml",
    "action": "create",
    "rule_module": "workflow_audit",
    "severity": "medium"
  },
  {
    "reason": "Action hyperpolymath/standards/.github/workflows/governance-reusable.yml@main needs attention",
    "type": "unpinned_action",
    "file": "governance.yml",
    "action": "pin_sha",
    "rule_module": "workflow_audit",
    "severity": "high"
  },
  {
    "reason": "unwrap_or(0) with dangerous default (1 occurrences, CWE-754)",
    "type": "unwrap_dangerous_default",
    "file": "/home/runner/work/my-lang/my-lang/_exploratory/me-scaffolding/crates/parser/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "critical"
  },
  {
    "reason": "expect() in hot path (80 occurrences, CWE-754)",
    "type": "expect_in_hot_path",
    "file": "/home/runner/work/my-lang/my-lang/_exploratory/me-scaffolding/crates/parser/src/lib.rs",
    "action": "flag",
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    "severity": "medium"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (1 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/my-lang/my-lang/my-ssg/src/generator.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "expect() in hot path (5 occurrences, CWE-754)",
    "type": "expect_in_hot_path",
    "file": "/home/runner/work/my-lang/my-lang/crates/my-mir/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "medium"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (26 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/my-lang/my-lang/crates/my-fmt/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (1 occurrences, CWE-754)",
    "type": "unwrap_without_check",
    "file": "/home/runner/work/my-lang/my-lang/crates/my-hir/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
    "severity": "high"
  },
  {
    "reason": "unwrap() without prior check -- DoS via panic (3 occurrences, CWE-754)",
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    "file": "/home/runner/work/my-lang/my-lang/crates/my-llvm/src/lib.rs",
    "action": "flag",
    "rule_module": "code_safety",
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]

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