add: dev workflow shenanigans

some shit

scripts/gen-compile-commands.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env sh
+# Generate compile_commands.json for clangd.
+#
+# Uses bear when available so every real compile command is captured
+# (future-proof as the project grows). Otherwise hand-rolls the single
+# entry from the flags in the generated Makefile — one source file, one
+# entry, no mysteries.
+set -eu
+
+ROOT=$(cd "$(dirname "$0")/.." && pwd)
+cd "$ROOT"
+
+if [ ! -f Makefile ]; then
+    echo "gen-compile-commands: no Makefile found - run ./autogen.sh first" >&2
+    exit 1
+fi
+
+if command -v bear >/dev/null 2>&1; then
+    bear -- make -B >/dev/null
+    # Drop the configure probes (conftest.c); clangd only wants real files.
+    jq 'map(select(.file | endswith("conftest.c") | not))' compile_commands.json \
+        > compile_commands.json.tmp && mv compile_commands.json.tmp compile_commands.json
+    echo "compile_commands.json generated via bear"
+    exit 0
+fi
+
+CC=$(sed -n 's/^CC = //p' Makefile | head -n1)
+[ -z "$CC" ] && CC=cc
+DEFS=$(sed -n 's/^DEFS = //p' Makefile | head -n1)
+AM_CFLAGS=$(sed -n 's/^AM_CFLAGS = //p' Makefile | head -n1)
+CFLAGS=$(sed -n 's/^CFLAGS = //p' Makefile | head -n1)
+
+# Drop defines carrying embedded quotes (PACKAGE_* metadata): they would
+# break JSON and clangd does not need them.
+SAFE_DEFS=''
+for d in $DEFS; do
+    case "$d" in
+        *\"*) ;;
+        *) SAFE_DEFS="$SAFE_DEFS $d" ;;
+    esac
+done
+
+CMD="$CC$SAFE_DEFS -I. $AM_CFLAGS $CFLAGS -c src/main.c -o src/main.o"
+
+if command -v jq >/dev/null 2>&1; then
+    jq -n --arg d "$ROOT" --arg c "$CMD" --arg f "$ROOT/src/main.c" \
+        '[{directory: $d, command: $c, file: $f}]' > compile_commands.json
+else
+    printf '[{"directory":"%s","command":"%s","file":"%s"}]\n' \
+        "$ROOT" "$CMD" "$ROOT/src/main.c" > compile_commands.json
+fi
+echo "compile_commands.json generated (fallback)"