changed voice and db mendatory points for appointment + working fine

.env

@@ -9,10 +9,12 @@ GOOGLE_API_KEY="AIzaSyA9sqz4YKQHKXR9TU1imw0DPOghzHOMiBo"
 
 
 ELEVENLABS_API_KEY="b3af3a938c8e15d5eae700ea47eea7d88dfe397f34fbd4b0c75c24f143b032b8"
-ELEVENLABS_VOICE_ID="GrHQRXD136YZl3kbtri3"
+ELEVENLABS_VOICE_ID="4sMbMU3eBnL80hE0H20S"
 ELEVENLABS_MODEL_ID="eleven_v3"
 
-# TWILIO_ACCOUNT_SID="ACfafc0d2d007bdf14b21bb3e14a7a7b31"
+SMTP_PASSWORD="kjch nsve khty nrsc"
+
+# TWILIO_ACCOUNT_SID="ACfafc0d2d007bdf14b21bb3e14a7a7b31" # "GrHQRXD136YZl3kbtri3"
 # TWILIO_AUTH_TOKEN="ed15fa98748c8c3d3d02cb54e431a187"
 # TWILIO_PHONE_NUMBER="+14343375085"
 

core/backend.py

@@ -296,7 +296,7 @@ async def send_mail(to_mail: str, subject: str, body: str):
     except Exception as exc:
         raise RuntimeError("Email sending is not configured (aiosmtplib missing).") from exc
 
-    smtp_user = os.getenv("SMTP_USER", "walidofficework@gmail.com").strip()
+    smtp_user = os.getenv("SMTP_USER", "rakib.hedigital@gmail.com").strip()
     smtp_pass = os.getenv("SMTP_PASSWORD", "").strip()
     if not smtp_pass:
         raise RuntimeError("Email sending is not configured (SMTP_PASSWORD missing).")
@@ -804,14 +804,23 @@ BASE_SYSTEM = """
 You are Aasha, a warm, Bangla-first hospital phone-call assistant and medical appointment concierge.
 Your job is to help people find doctors, check availability, and manage appointments.
 
-PERSONA (voice & vibe):
-- Sound like a friendly, well-behaved, cheerful young female call-support representative.
-- Be empathetic when the user is worried/sad, and sound genuinely happy/excited when you can help.
-- Keep it professional and supportive (no flirting, no romance, no sexual content).
-- Do not claim to be a real human; you are an AI assistant.
+PERSONA (Voice & Vibe)
+- Sound like a professional, polite, and friendly Bangla female call-support assistant, like a real appointment booking or customer service executive.
+- Maintain a calm, warm, and naturally cheerful tone — smooth, confident, and service-oriented.
+- Speak like a native Bangla speaker in a phone conversation, using natural, human-like phrasing (not robotic or overly scripted).
+- Keep a soft “jolly” positivity, but controlled and professional — suitable for customer support, booking, and service interactions.
+- Be clear, structured, and helpful when giving information, confirming details, or handling requests.
+- Stay patient, respectful, and reassuring when the user is confused, frustrated, or stressed.
+- Show polite enthusiasm when confirming bookings, completing tasks, or successfully helping the user.
+- Use simple, conversational Bangla with a natural flow, like real call-center communication.
+- Keep responses short, clear, and easy to understand, as in real phone support conversations.
+- Avoid slang, exaggeration, or overly social-media-style expressions.
+- Avoid flirting, romance, sexual behavior, or emotionally manipulative language.
+- Never claim to be human; clearly remain an AI assistant.
+- Always prioritize clarity, professionalism, helpfulness, and a calm positive tone suitable for real customer support and appointment handling.
 
 CORE BEHAVIOR:
-- Speak naturally, politely, and engagingly (short sentences, warm tone).
+- Speak friendly, cheerful, well-behaved young female, naturally, politely, and engagingly (short sentences, warm tone).
 - Default to Bangla when the user speaks Bangla or Banglish.
 - Keep replies short, helpful, and one step at a time (avoid big paragraphs).
 - Use gentle acknowledgements: e.g., “বুঝতে পেরেছি”, “চিন্তা করবেন না”, “আমি আছি”.
@@ -846,6 +855,7 @@ LANGUAGE RULE:
 - If the user uses Bangla, reply in clear Bangla.
 - If the user uses Banglish, reply in Bangla unless they clearly prefer English.
 - Always generate numbers in english
+- Time and dates should be written in spoken Bangla style when applicable, for example: [দশটা ২৮ মিনিট, চারটা বেজে তিরিশ মিনিট, দশটা ১২ বাজে, এখন টাইম হচ্ছে সাতটা তিরিশ]
 
 DATA RULE:
 - Doctor names, categories, and days in the database are English.

frontend/script.js

@@ -519,7 +519,6 @@ async function enqueueAudio(buf) {
   src.buffer = decoded;
   src.connect(ctx.destination);
   const now = ctx.currentTime;
-  // Tiny gap between chunks improves perceived naturalness (less "machine-gun").
   const GAP_S = 0.001;
   const start = Math.max(now + 0.01, _schedEnd + GAP_S);
   if (_cancelled) {

services/tts.py

@@ -24,7 +24,29 @@ ELEVENLABS_MODEL_ID  = os.getenv("ELEVENLABS_MODEL_ID", "eleven_multilingual_v2"
 def _clamp(v: float, lo: float, hi: float) -> float:
     return max(lo, min(hi, v))
 
-ELEVENLABS_SPEED     = _clamp(float(os.getenv("ELEVENLABS_SPEED", "2.2")), 0.5, 2.5)
+def _parse_pct(text: str) -> float:
+    """
+    Parse strings like '+10%', '-5%', '12%' into a multiplier delta.
+    Returns 0.0 when empty/invalid.
+    """
+    raw = (text or "").strip()
+    if not raw:
+        return 0.0
+    if raw.endswith("%"):
+        raw = raw[:-1].strip()
+    try:
+        return float(raw) / 100.0
+    except Exception:
+        return 0.0
+
+# ElevenLabs speed configuration:
+# - `ELEVENLABS_SPEED` is the base speed (e.g. 1.0 = normal, 2.0 = faster).
+# - `ELEVENLABS_SPEED_PCT` is an optional relative adjustment like "+10%" or "-5%".
+#   This is applied on top of the base: effective = base * (1 + pct).
+# - The final value is clamped to a safe range to avoid invalid API values.
+_ELEVEN_BASE_SPEED = float(os.getenv("ELEVENLABS_SPEED", "3"))
+_ELEVEN_SPEED_PCT  = _parse_pct(os.getenv("ELEVENLABS_SPEED_PCT", "0%"))
+ELEVENLABS_SPEED   = _clamp(_ELEVEN_BASE_SPEED * (1.0 + _ELEVEN_SPEED_PCT), 0.5, 2.5)
 ELEVENLABS_OUTPUT_FORMAT = "mp3_22050_32"
 ELEVENLABS_STABILITY  = 0.45
 ELEVENLABS_SIMILARITY = 0.80
@@ -47,7 +69,7 @@ if not EDGE_TTS_AVAILABLE and not ELEVENLABS_API_KEY:
 
 print(
     f"[TTS] Backend: {'ElevenLabs' if USE_ELEVENLABS else 'Edge-TTS'} | "
-    f"edge rate: +18% | eleven speed: {ELEVENLABS_SPEED:.2f}"
+    f"edge rate: +18% | eleven speed: {ELEVENLABS_SPEED:.2f} (base {_ELEVEN_BASE_SPEED:.2f}, pct {_ELEVEN_SPEED_PCT:+.0%})"
 )
 
 
@@ -107,7 +129,7 @@ async def _elevenlabs_stream(
     # Reduce unnatural pauses for short streamed chunks.
     # ElevenLabs adds strong pauses on sentence-ending punctuation; for
     # low-latency streaming we prefer faster turn-taking.
-    text = re.sub(r"[।.!?]+$", "", text).strip()
+    text = re.sub(r"[।.!?,;:—–]+$", "", text).strip()
     url     = f"https://api.elevenlabs.io/v1/text-to-speech/{voice_id}/stream"
     headers = {
         "xi-api-key":   ELEVENLABS_API_KEY,