chore: move app skill in-repo + AGENTS.md

- Migrates tactility-app-development from ~/.hermes/skills/ into
  .claude/skills/ for repo co-location
- Adds AGENTS.md with local workstation context, hardware table,
  board-direct build/env wrapper (PYTHONPATH fix), ELF missing-symbol
  triage, app patterns (immersive, QVGA rail, tutorial 2-row,
  GameKit bubbling, screenshot rate-limit), and skill index

Refs: personal Gitea mirror

.claude/skills/tactility-app-development/scripts/verify_symbols.py

@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+"""
+Verify ELF symbols against firmware exports. Rerunnable from skill.
+
+Usage:
+  python3 scripts/verify_symbols.py [--elf Apps/BibleVerse/build/cmake-build-esp32s3/BibleVerse.app.elf] [--firmware ../firmware]
+
+Requires: xtensa-esp32s3-elf-nm in PATH after sourcing ~/esp/esp-idf/export.sh
+"""
+import argparse, pathlib, re, subprocess, sys
+
+def get_undef(elf_path: pathlib.Path):
+    r = subprocess.run(
+        ["zsh","-c", f"source /Users/adolforeyna/esp/esp-idf/export.sh >/dev/null 2>&1; xtensa-esp32s3-elf-nm -D {elf_path}"],
+        capture_output=True, text=True
+    )
+    undef=[]
+    for line in r.stdout.splitlines():
+        parts=line.split()
+        if len(parts)>=2 and parts[-2]=='U':
+            undef.append(parts[-1])
+    return undef, r.stdout
+
+def get_exports(firmware_dir: pathlib.Path):
+    pat=re.compile(r'(?:ESP_ELFSYM_EXPORT|DEFINE_MODULE_SYMBOL)\s*\(\s*([A-Za-z0-9_]+)\s*\)')
+    exp=set()
+    for fp in firmware_dir.rglob("*.*"):
+        if 'build' in str(fp): continue
+        if fp.suffix not in ('.c','.h','.cpp'): continue
+        try:
+            exp.update(m.group(1) for m in pat.finditer(fp.read_text(errors='ignore')))
+        except: pass
+    return exp
+
+def main():
+    p=argparse.ArgumentParser()
+    p.add_argument('--elf', default='Apps/BibleVerse/build/cmake-build-esp32s3/BibleVerse.app.elf')
+    p.add_argument('--firmware', default='../firmware')
+    args=p.parse_args()
+    elf=pathlib.Path(args.elf)
+    fw=pathlib.Path(args.firmware)
+    if not elf.exists():
+        print(f"ELF not found: {elf}", file=sys.stderr)
+        sys.exit(2)
+    undef, raw = get_undef(elf)
+    exp = get_exports(fw)
+    missing=[s for s in undef if s not in exp]
+    print(f"Undefined: {len(undef)}")
+    print(f"Exported: {len(exp)}")
+    if missing:
+        print(f"Missing {len(missing)}:")
+        for s in sorted(missing):
+            print(f"  - {s}")
+        sys.exit(1)
+    print("✅ All symbols resolved")
+    sys.exit(0)
+
+if __name__ == '__main__':
+    main()