feat(bigmind): add tiered AI-generated achievement badges with image rendering

mcp/bigmind/tests/test_profile_builder.py

@@ -7,6 +7,7 @@ BIGMIND_DB_PATH + BIGMIND_USER to a fresh SQLite file per test.
 import pytest
 from datetime import datetime, timezone, timedelta
 from bigmind import memory_store
+from bigmind.db import db
 from bigmind.profile_builder import compute_achievements, build_profile_data
 
 
@@ -44,6 +45,11 @@ class TestComputeAchievements:
             "on_fire", "storyteller", "night_owl", "speed_thinker",
             "first_handshake", "birthday", "shared_mind",
             "frugal_mind", "quarter_million", "token_millionaire", "sniper",
+            "networker_bronze", "networker_silver", "networker_gold", "networker_platinum",
+            "tokensniper_bronze", "tokensniper_silver", "tokensniper_gold", "tokensniper_platinum",
+            "hypothesismaster_bronze", "hypothesismaster_silver", "hypothesismaster_gold", "hypothesismaster_platinum",
+            "memoryarchitect_bronze", "memoryarchitect_silver", "memoryarchitect_gold", "memoryarchitect_platinum",
+            "sessionveteran_bronze", "sessionveteran_silver", "sessionveteran_gold", "sessionveteran_platinum",
         }
         assert expected == ids
 
@@ -325,4 +331,60 @@ class TestComputeAchievements:
         # At minimum: first_breath + first_handshake = 2
         assert len(unlocked) >= 2
 
+class TestTieredAchievements:
+    def test_networker_bronze(self):
+        uid = _uid()
+        with db() as conn:
+            conn.execute("INSERT INTO people (user_id, username) VALUES (?, ?)", (uid, "test"))
+            conn.commit()
+        achs = compute_achievements(uid)
+        bronze = next(a for a in achs if a['id'] == 'networker_bronze')
+        assert bronze['unlocked'] is True
+        assert bronze['image'].endswith('networker_bronze.png')
 
+    def test_tokensniper_silver(self):
+        uid = _uid()
+        sid = memory_store.create_session(uid)
+        memory_store.log_token_save(sid, uid, "big save", 60000, "grep")
+        achs = compute_achievements(uid)
+        silver = next(a for a in achs if a['id'] == 'tokensniper_silver')
+        assert silver['unlocked'] is True
+
+    def test_hypothesismaster_bronze(self):
+        uid = _uid()
+        sid = memory_store.create_session(uid)
+        for _ in range(3):
+            hid = memory_store.add_hypothesis(uid, sid, "test", 0.8)
+            memory_store.resolve_hypothesis(hid, uid, "confirmed", "yes")
+        achs = compute_achievements(uid)
+        bronze = next(a for a in achs if a['id'] == 'hypothesismaster_bronze')
+        assert bronze['unlocked'] is True
+
+    def test_memoryarchitect_silver(self):
+        uid = _uid()
+        for _ in range(100):
+            memory_store.store_fact(uid, "test", f"fact {_}")
+        achs = compute_achievements(uid)
+        silver = next(a for a in achs if a['id'] == 'memoryarchitect_silver')
+        assert silver['unlocked'] is True
+
+    def test_sessionveteran_bronze(self):
+        uid = _uid()
+        for _ in range(50):
+            sid = memory_store.create_session(uid)
+            _close_session(sid)
+        achs = compute_achievements(uid)
+        bronze = next(a for a in achs if a['id'] == 'sessionveteran_bronze')
+        assert bronze['unlocked'] is True
+
+    def test_tiered_achievements_have_image(self):
+        uid = _uid()
+        achs = compute_achievements(uid)
+        tiered_ids = [
+            f"{cat}_{tier}" for cat in ["networker", "tokensniper", "hypothesismaster", "memoryarchitect", "sessionveteran"]
+            for tier in ["bronze", "silver", "gold", "platinum"]
+        ]
+        for tid in tiered_ids:
+            a = next(aa for aa in achs if aa['id'] == tid)
+            assert a['image'] is not None
+            assert a['image'].endswith(tid + '.png')