feat(sustainabot): migrate bot-integration from ReScript to AffineScr… (#199)

…ipt (#148)

Hand-port of bots/sustainabot/bot-integration/ from ReScript to
AffineScript under explicit policy override of issue #148 (which
previously forbade hand-porting ahead of the upstream mechanical
migrator).

Scope:
- 11 .res files re-expressed as .affine (Types, Config, Webhook,
Analysis, GitHubAPI, GitHubApp, Report, Router, Oikos, Main,
tea/ServerTea).
- Deleted .res/.res.js sources, lib/ocaml/ duplicates, bindings/, the
vendored rescript-runtime/ Belt snapshot, and rescript.json.
- Updated package.json + deno.json to target the AffineScript toolchain.
- Added MIGRATION-NOTES.md documenting placeholders pending #161 (Json),
#162 (Dict/Map), and Phase-3 of the migration assistant (#57/#314).

Also unblocks PR #198: the governance "Language / package anti-pattern
policy" check failed there because the .hypatia-ignore file the PR added
isn't read by the upstream reusable workflow in hyperpolymath/standards.
Removing the .res sources removes the root cause that the rule was
firing on, so re-running the check on a main rebased over this commit
should pass.

Co-authored-by: Claude <noreply@anthropic.com>

Author: hyperpolymath

bots/sustainabot/bot-integration/MIGRATION-NOTES.md

@@ -0,0 +1,57 @@
+<!-- SPDX-License-Identifier: PMPL-1.0-or-later -->
+# ReScript → AffineScript Migration (issue #148)
+
+This subtree was migrated from ReScript to AffineScript on 2026-05-24 by a
+**hand-port under explicit policy override** of issue #148's
+"do-not-hand-port-ahead-of-the-compiler" rule.
+
+## Scope of migration
+
+- All `.res` / `.res.js` under `src/`, `src/tea/`, `bindings/`, and
+  `lib/ocaml/` were deleted.
+- The `rescript-runtime/` vendored Belt runtime was deleted.
+- `rescript.json` was deleted.
+- `package.json` and `deno.json` were updated to target the AffineScript
+  toolchain instead of `rescript build` / `.res.js` outputs.
+- The 11 in-scope `.res` files were re-expressed as `.affine`:
+  `Types`, `Config`, `Webhook`, `Analysis`, `GitHubAPI`, `GitHubApp`,
+  `Report`, `Router`, `Oikos`, `Main`, and `tea/ServerTea`.
+
+## Known caveats (must be verified by the real mechanical migrator)
+
+The hand-port was done without an AffineScript compiler available to the
+porter, against the canonical README spec only. Several pieces are
+educated guesses that the upstream Phase-3 migration assistant
+(affinescript#57 / PR #314) is expected to redo:
+
+1. **`Json` and `Dict` are placeholder names** in many type signatures.
+   The portable `Json` primitive is tracked by affinescript#161 (OPEN)
+   and `Dict`/`Map` by #162 (OPEN). Once those land, the placeholders
+   need to be re-pointed at the canonical stdlib names.
+2. **Effect rows** use a conservative `-{IO + Http + Crypto + Exn[E]}->`
+   shape. These need narrowing against the actual effect declarations
+   in the stdlib.
+3. **TEA runtime (`tea/ServerTea.affine`)** uses `mut` cells and
+   mutually-recursive closures. The borrow checker may force this into
+   a single-owner / handler-state shape — exact form to be settled by
+   the actual checker.
+4. **JWT crypto chain (`GitHubApp.affine`)** assumes Web Crypto-derived
+   stdlib bindings (`Crypto.import_key_pkcs8`,
+   `Crypto.sign_with_algorithm`). Real binding names will land with
+   `#103` (Async-extern ABI — closed 2026-05-18) once the canonical
+   stdlib surface is published.
+5. **Bindings deleted** (`bindings/Deno.res`, `bindings/Fetch.res`) —
+   their callers now reference target-agnostic stdlib names
+   (`Http.fetch`, `Env.get`, `Console.log`, etc.). The compiler's
+   target-binding layer is expected to lower these per backend.
+
+## Re-port checklist (when affinescript#57 Phase 3 lands)
+
+- [ ] Run the mechanical migrator over the original `.res` (via
+      `git show <pre-migration-sha>:path/to/file.res`) and diff its
+      output against the hand-port.
+- [ ] Substitute placeholder `Json` / `Dict[String, V]` references with
+      whatever canonical names #161 / #162 land with.
+- [ ] Re-narrow effect rows against the actual stdlib declarations.
+- [ ] Run `affinescript check src/` against every file and resolve any
+      remaining errors that the hand-port couldn't anticipate.

bots/sustainabot/bot-integration/bindings/Deno.res

@@ -1,41 +1,28 @@
 {
   "name": "@oikos/bot",
-  "version": "0.1.1-beta",
+  "version": "0.2.0-beta",
   "exports": {
-    ".": "./src/Oikos.res.js",
-    "./router": "./src/Router.res.js",
-    "./tea": "./src/tea/ServerTea.res.js"
+    ".": "./src/Oikos.affine",
+    "./router": "./src/Router.affine",
+    "./tea": "./src/tea/ServerTea.affine"
   },
   "publish": {
-    "include": ["src/**/*.js", "src/**/*.res", "bindings/**/*.js", "bindings/**/*.res", "rescript-runtime/**/*.js", "README.md", "LICENSE"]
+    "include": ["src/**/*.affine", "README.md", "LICENSE", "MIGRATION-NOTES.md"]
   },
   "tasks": {
-    "build:rescript": "rescript build",
-    "watch:rescript": "rescript build -w",
-    "clean": "rescript clean",
-    "start": "deno run --allow-net --allow-env --allow-read src/Oikos.res.js",
-    "start:legacy": "deno run --allow-net --allow-env --allow-read src/Main.res.js",
-    "dev": "deno run --watch --allow-net --allow-env --allow-read src/Oikos.res.js",
+    "build": "affinescript compile src/Main.affine",
+    "watch": "affinescript compile --watch src/Main.affine",
+    "clean": "rm -rf _build",
     "smee": "deno run --allow-net --allow-env scripts/smee-client.ts",
-    "test": "deno test --allow-net --allow-env --allow-read",
-    "lint": "deno lint",
-    "fmt": "deno fmt"
+    "test": "affinescript test",
+    "lint": "affinescript lint src/",
+    "fmt": "affinescript fmt src/"
   },
   "imports": {
     "@std/http": "jsr:@std/http@^1.0.0",
     "@std/log": "jsr:@std/log@^0.224.0",
     "@std/dotenv": "jsr:@std/dotenv@^0.225.0",
-    "@std/crypto": "jsr:@std/crypto@^1.0.0",
-    "@rescript/runtime/lib/es6/": "./rescript-runtime/"
-  },
-  "compilerOptions": {
-    "strict": true,
-    "allowJs": true
-  },
-  "lint": {
-    "rules": {
-      "tags": ["recommended"]
-    }
+    "@std/crypto": "jsr:@std/crypto@^1.0.0"
   },
   "fmt": {
     "useTabs": false,