feat: panproto 0.52 + codegen emit gate + render pilot (release v0.11.0)

[aaronstevenwhite]

Bumps the panproto pin v0.47.0 → v0.52.0 and integrates the new codegen capabilities, packaged as release v0.11.0.

What's in it

Panproto pin v0.47.0 → v0.52.0. No source changes were needed for the existing surface (SchemaBuilder, protolens constructors, lens runtime, panproto-check, expression engine). The bump unlocks panproto-parse's verified source-code emit (255 of 261 grammars round-trip under the corpus oracle in 0.52).

Emit gate (idiolect-codegen/src/emit/gate.rs). Every generated file (rust and typescript) is re-parsed through the matching tree-sitter grammar before write or drift-check; codegen fails on ERROR/MISSING recovery vertices. This hardens all codegen, not just the new path. Only lang-rust and lang-typescript grammars are compiled in.

Panproto-native render pilot (idiolect-codegen/src/emit/panproto_rust.rs). The directory mod.rs index files are built as by-construction AbstractSchemas in the tree-sitter-rust theory and rendered through pretty_with_protocol. tests/panproto_pilot_parity.rs pins them byte-equal (post-rustfmt) to the syn target over the repo's real lexicon tree. The syn/oxc targets stay canonical; this is a deliberate pilot slice, not the full swap.

tests/panproto_emit_gate.rs pins EmitVerificationStatus::Verified for both grammars so an upstream emit downgrade is loud at the next bump.

Scope

This is the pilot + gate, intentionally scoped. The full move to panproto-native emit is sequenced in a planning note (local notes/, gitignored) and is gated on three upstream de-novo emit defects filed as panproto#187 (line_comment newline, token_tree anonymous punctuation, blank-lines-before unconsumed). Nothing here is half-finished.

Release packaging (v0.11.0)

Per RELEASE.md, in separate commits:

• release: v0.11.0 — bumped Cargo.toml, packages/schema/package.json, and the inter-crate path-dep version requirements (the RELEASE.md sed snippet only covers the workspace version line; the idiolect-* path deps pin version = "x" and must be bumped too or the build fails). Cargo.lock refreshed.
• changelog: v0.11.0 — [Unreleased] finalized to [0.11.0] — 2026-06-08 with a fresh empty [Unreleased].

Minor bump, consistent with v0.9.0 (the prior panproto pin bump) and the pre-1.0 policy treating minors as the breaking-change boundary.

Verification

• cargo test --workspace: 506 passed, 0 failed.
• cargo clippy --workspace --all-targets, cargo fmt --check, cargo deny check: clean.
• idiolect-codegen check (drift gate): generated tree in sync.
• Version consistency (Cargo.toml == package.json == v0.11.0): matches what the verify-version release job asserts.

Follow-up

Suggest a RELEASE.md tweak so step 1 also bumps the inter-crate path-dep versions, since the current snippet leaves the build broken until they're done by hand.