refactor(bot)!: rename 'ai procurement' -> 'bot/' so the compose build context is committed

The bot service in docker-compose.yml builds from ./bot, but the agent code lived in 'ai procurement/' and ./bot was only a Windows junction on reza.g's machine (and was gitignored) — exactly as the team reported: 'bot/ was never committed — prod-v7's bot is un-buildable from the repo.'

- junction removed; 'ai procurement/' renamed to 'bot/' via git mv (all 41 files keep their history as pure renames)
- 'bot/' dropped from .gitignore (voice/ stays ignored — runtime voice notes; bot/.env stays ignored by bot/.gitignore)
- compose needs no change: context: ./bot and ./bot/app now resolve to committed files
- bot/INTEGRATION-REPORT.md added: full story (problem, root cause, git state, security note on the committed BALE_BOT_TOKEN / AI_API_KEY compose defaults, and usage instructions for the team)

Verified: 41 renames staged with zero secret/cache files; voice/ and bot/.env still ignored.

bot/app/handlers/callbacks.py

@@ -0,0 +1,107 @@
+"""Inline-button routing (callback_query).
+
+Data grammar (≤64 bytes):  op:{arg}:{d8}  /  pk:{d8}:{field}:{idx}  /  qc:{idx}
+ / ac:{op}[:{i}] / ar:{op} — full state lives in bot_drafts / pending flows.
+"""
+import logging
+
+from app import drafts as draft_store
+from app.runtime import LinkedUser
+from app.texts import CANCELLED, UNLINKED, esc
+
+from . import quote, supplier, material, decisions
+
+logger = logging.getLogger("bot.callbacks")
+
+
+async def handle_callback(ctx, cq: dict) -> None:
+    chat_id = ((cq.get("message") or {}).get("chat") or {}).get("id")
+    data = cq.get("data") or ""
+    if chat_id is None:
+        return
+    try:
+        await _dispatch(ctx, chat_id, data, cq)
+    except Exception:
+        logger.exception("callback failed: %s", data)
+        await ctx.send(chat_id, "خطا در پردازش دکمه؛ دوباره تلاش کن.")
+    finally:
+        await ctx.bale.answer_callback_query(cq.get("id"), None)
+
+
+async def _gate(ctx, chat_id: int) -> LinkedUser | None:
+    link = await ctx.links.get(chat_id)
+    if link and link.user_id:
+        return LinkedUser(chat_id, link.user_id, link.display_name, link.role, is_admin=False)
+    if chat_id in ctx.admin_chat_ids:
+        return LinkedUser(chat_id, None, None, None, is_admin=True)
+    await ctx.send(chat_id, UNLINKED)
+    return None
+
+
+async def _dispatch(ctx, chat_id: int, data: str, cq: dict) -> None:
+    user = await _gate(ctx, chat_id)
+    if user is None:
+        return
+    parts = data.split(":")
+
+    # ---- pending-flow buttons (accept / arrive / quote pick) ---------------
+    if parts[0] == "qc" and len(parts) == 2:
+        flow = ctx.pending.get(chat_id)
+        if flow and flow.kind == "quote_pick":
+            await decisions.apply_quote_pick(ctx, chat_id, user, flow, int(parts[1]))
+        return
+    if parts[0] == "ac":
+        await decisions.handle_accept_callback(ctx, chat_id, user, parts)
+        return
+    if parts[0] == "ar":
+        await decisions.handle_arrive_callback(ctx, chat_id, user, parts)
+        return
+
+    # ---- pick a candidate for a draft field -------------------------------
+    if parts[0] == "pk" and len(parts) == 4:
+        draft = await draft_store.get_by_prefix(parts[1], chat_id)
+        if draft is None:
+            await ctx.send(chat_id, "این پیش‌نویس دیگر معتبر نیست.")
+            return
+        await _apply_pick(ctx, chat_id, user, draft, parts[2], int(parts[3]))
+        return
+
+    # ---- draft commit / cancel --------------------------------------------
+    op, arg, prefix = parts[0], parts[1], parts[2] if len(parts) > 2 else ""
+    if op in ("q", "s", "m") and arg in ("ok", "ok2", "no"):
+        kind = {"q": draft_store.KIND_QUOTE, "s": draft_store.KIND_SUPPLIER, "m": draft_store.KIND_MATERIAL}[op]
+        draft = await draft_store.get_by_prefix(prefix, chat_id)
+        if draft is None or draft.kind != kind:
+            await ctx.send(chat_id, "این پیش‌نویس دیگر معتبر نیست.")
+            return
+        if arg == "no":
+            await draft_store.set_status(draft.id, "cancelled")
+            ctx.pending.pop(chat_id, None)
+            if draft.review_message_id:
+                try:
+                    await ctx.bale.edit_message_text(chat_id, draft.review_message_id, "❌ این پیش‌نویس لغو شد.", reply_markup=None)
+                    await draft_store.set_bale_updated_at(draft.id)
+                except Exception:
+                    pass
+            await ctx.send(chat_id, CANCELLED)
+            return
+        if kind == draft_store.KIND_QUOTE:
+            await quote.commit(ctx, chat_id, user, draft, only_resolved=(arg == "ok2"))
+        elif kind == draft_store.KIND_SUPPLIER:
+            await supplier.commit(ctx, chat_id, user, draft)
+        else:
+            await material.commit(ctx, chat_id, user, draft)
+
+
+async def _apply_pick(ctx, chat_id: int, user: LinkedUser, draft, field: str, idx: int) -> None:
+    options = (draft.payload.get("options") or {}).get(field) or []
+    if idx < 0 or idx >= len(options):
+        await ctx.send(chat_id, "گزینه نامعتبر است.")
+        return
+    choice = options[idx]
+    if draft.kind == draft_store.KIND_QUOTE:
+        await quote.apply_pick(ctx, chat_id, user, draft, field, choice)
+    elif draft.kind == draft_store.KIND_SUPPLIER:
+        await supplier.apply_pick(ctx, chat_id, user, draft, field, choice)
+    elif draft.kind == draft_store.KIND_MATERIAL:
+        await material.apply_pick(ctx, chat_id, user, draft, field, choice)