chore(vendor): vendor the InterSystems ObjectScript tree-sitter grammars

Vendors the two MIT-licensed grammars from intersystems/tree-sitter-objectscript
@a7ffcdf (the language vendor's official grammars, ABI 15) that PR DeusData#467 needs:

  internal/cbm/vendored/grammars/objectscript_udl/      (.cls)
  internal/cbm/vendored/grammars/objectscript_routine/  (.mac/.inc/.rtn/.int)

Each directory carries the verbatim generated parser.c + scanner.c + tree_sitter/
headers + LICENSE. The one adjustment: each scanner.c's upstream
`#include "../../common/scanner.h"` is repointed to a per-directory
`objectscript_common.h` (a verbatim copy of the upstream common/scanner.h), because
this repo's shared vendored/common/scanner.h belongs to the cfml/fsharp grammars and
differs. Updates MANIFEST.md + THIRD_PARTY.md.

These files are dormant until DeusData#467 (the grammar shims + extraction) is rebased on
top; main's build is unaffected.

Refs DeusData#462, DeusData#467.

Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>

Author: DeusData

THIRD_PARTY.md

@@ -26,7 +26,7 @@ The core runtime headers in `internal/cbm/vendored/common/tree_sitter/`
 
 ## Tree-sitter Grammars
 
-158 pre-generated parsers are vendored in `internal/cbm/vendored/grammars/<lang>/`
+160 pre-generated parsers are vendored in `internal/cbm/vendored/grammars/<lang>/`
 (generated `parser.c` plus `scanner.c` where applicable, compiled statically).
 Each grammar is the work of its upstream authors and each grammar directory
 contains the upstream `LICENSE` file.

internal/cbm/vendored/grammars/MANIFEST.md

@@ -9,10 +9,11 @@ The grammars were originally vendored as bare `parser.c`+`scanner.c` with **no r
 
 ## Summary
 
-- Grammars: **156** — vendored-from-upstream: **139**, first-party/self-maintained: **12**, registry-disagreement: **5** (nim removed 2026-06-12, see below)
+- Grammars: **158** — vendored-from-upstream: **141**, first-party/self-maintained: **12**, registry-disagreement: **5** (nim removed 2026-06-12; objectscript_udl + objectscript_routine added 2026-06-24 — see note below)
 - ABI distribution: **7×** ABI-13 **85×** ABI-14 **64×** ABI-15 (runtime ceiling is ABI 15; never vendor ABI 16 without a runtime upgrade)
 - Vendored copies missing LICENSE: **0** — all upstream LICENSE files restored 2026-06-11 (first-party grammars carry the project MIT license; `move` uses the Helix-listed upstream tzakian/tree-sitter-move MIT text, `zsh` uses georgeharker/tree-sitter-zsh MIT)
-- `verdict`: VERIFIED-BOTH = our source matches *both* registries; VERIFIED-NVIM/HELIX = matches one; registry-disagreement = registries name a different repo (listed separately).
+- `verdict`: VERIFIED-BOTH = our source matches *both* registries; VERIFIED-NVIM/HELIX = matches one; registry-disagreement = registries name a different repo (listed separately); `vendor-maintained` = the language vendor's own grammar, not in nvim/Helix.
+- **objectscript_udl / objectscript_routine** (added 2026-06-24): vendored from [intersystems/tree-sitter-objectscript](https://github.com/intersystems/tree-sitter-objectscript) @ `a7ffcdf` — MIT, the InterSystems-official grammars (a niche vendor language, hence `vendor-maintained`, not in nvim-treesitter/Helix). **Re-vendor note:** each `scanner.c`'s upstream `#include "../../common/scanner.h"` is repointed to a per-directory `objectscript_common.h` (a verbatim copy of upstream `common/scanner.h`), because this repo's shared `vendored/common/scanner.h` belongs to the cfml/fsharp grammars and differs. The generated `parser.c`/`scanner.c` are otherwise byte-for-byte upstream — on re-vendor, re-apply only that single include rename.
 
 > ⚠️ **Pinned commit = the revision nvim-treesitter/Helix vendor** (battle-tested, canonical source), not bleeding-edge HEAD. When re-vendoring, update the pinned commit here.
 
@@ -134,6 +135,8 @@ Guarded by the `contract_all_grammars_in_graph` graph-breadth test in
 | nickel | 15 | nickel-lang/tree-sitter-nickel | `b5b6cc3bc7b9` | VERIFIED-BOTH | ✅ |
 | nix | 13 | nix-community/tree-sitter-nix | `eabf96807ea4` | VERIFIED-BOTH | ✅ |
 | objc | 14 | tree-sitter-grammars/tree-sitter-objc | `181a81b8f23a` | VERIFIED-NVIM | ✅ |
+| objectscript_routine | 15 | intersystems/tree-sitter-objectscript | `a7ffcdf2de8e` | vendor-maintained | ✅ |
+| objectscript_udl | 15 | intersystems/tree-sitter-objectscript | `a7ffcdf2de8e` | vendor-maintained | ✅ |
 | ocaml | 14 | tree-sitter/tree-sitter-ocaml | `5a979b3ec7f1` | VERIFIED-BOTH | ✅ |
 | odin | 14 | tree-sitter-grammars/tree-sitter-odin | `d2ca8efb4487` | VERIFIED-BOTH | ✅ |
 | pascal | 14 | Isopod/tree-sitter-pascal | `042119eca2e1` | VERIFIED-BOTH | ✅ |

internal/cbm/vendored/grammars/objectscript_routine/LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2025 InterSystems Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.