fix(wizard,quotes,dates): reliable error routing, single-project accept, Persian date/time input

Wizard:
- failed saves now route to the exact step+field: a new data-field attribute on every required section (supplier_id, line_items, termsheets, project, quote_date, expiry_date, notes, proforma) plus resolveErrorTarget() that maps ApiError.field / message keywords (supplier, line item/material/unit/quantity, termsheet/schedule/milestone, project, dates, notes, file) to the offending step — the «رفع خطا» toast action scrolls/focuses the right control instead of guessing
- material records are no longer created on the fly while typing (rememberMaterial no longer fires addMaterial per blur); materials/specs/units are written once during the final save, avoiding half-created catalog rows

Accept flow:
- quote_service no longer rewrites LineItemProjects on accept — those candidate-project rows stay 100% untouched and only item_decisions.project_id is written, matching the per-item target-project model and the UI payload (item_projects: [])

Dates/time:
- JalaliDatePicker: hour/minute are now editable text fields (Persian digits, clamping, 3-digit retype handling) with a controlled useEffect that only rewrites the inputs when the numeric value actually changes — no more wiping in-progress typing; date-only detection tightened to a full YYYY-MM-DD match so datetime strings are not misread

Also: /api validation logging (RequestValidationError) now includes the path and error list for faster diagnosis.

Verified: api + frontend image builds (python, tsc, vite) clean on top of origin/production (incl. the team's mobile layout merges).

frontend/src/lib/jalali.ts

@@ -99,8 +99,11 @@ export const MONTHS = [
 
 export const WEEKDAYS = ["ش", "ی", "د", "س", "چ", "پ", "ج"];
 
-function toEnSafe(s: string): string {
-  return String(s).replace(/[۰-۹]/g, (d) => String("۰۱۲۳۴۵۶۷۸۹".indexOf(d)));
+export function toAsciiDigits(s: string | number | null | undefined): string {
+  if (s == null) return "";
+  return String(s)
+    .replace(/[۰-۹]/g, (d) => String("۰۱۲۳۴۵۶۷۸۹".indexOf(d)))
+    .replace(/[٠-٩]/g, (d) => String("٠١٢٣٤٥٦٧٨٩".indexOf(d)));
 }
 
 // format an ISO (gregorian) string to "۱۴۰۳/۰۵/۱۲"
@@ -121,16 +124,29 @@ export function isoToJalaliLong(iso: string | null | undefined): string {
   return `${toFa(jd)} ${MONTHS[jm - 1]} ${toFa(jy)}`;
 }
 
-// parse a jalali "yyyy/m/d" string to a JS Date (gregorian) at local midnight
+// parse a jalali "yyyy/m/d" or "yyyy/m/d h:m" string to a JS Date (gregorian) ISO string
 export function jalaliStrToIso(str: string | null | undefined): string | null {
   if (!str) return null;
-  const nums = String(str)
-    .split(/[/\-.]/)
-    .map((x) => parseInt(toEnSafe(x), 10));
-  if (nums.length < 3 || nums.some((n) => Number.isNaN(n))) return null;
-  const [jy, jm, jd] = nums;
+  const s = toAsciiDigits(str).trim();
+  const m = s.match(/^(1[34]\d{2})[/\-.](\d{1,2})[/\-.](\d{1,2})(?:[ T](\d{1,2}):(\d{1,2})(?::(\d{1,2}))?)?/);
+  if (!m) {
+    const nums = s
+      .split(/[/\-.]/)
+      .map((x) => parseInt(x, 10));
+    if (nums.length < 3 || nums.some((n) => Number.isNaN(n))) return null;
+    const [jy, jm, jd] = nums;
+    const [gy, gm, gd] = jalaliToGregorian(jy, jm, jd);
+    const dt = new Date(gy, gm - 1, gd);
+    return Number.isNaN(dt.getTime()) ? null : dt.toISOString();
+  }
+  const jy = parseInt(m[1], 10);
+  const jm = parseInt(m[2], 10);
+  const jd = parseInt(m[3], 10);
+  const h = m[4] != null ? parseInt(m[4], 10) : 0;
+  const min = m[5] != null ? parseInt(m[5], 10) : 0;
+  const sec = m[6] != null ? parseInt(m[6], 10) : 0;
   const [gy, gm, gd] = jalaliToGregorian(jy, jm, jd);
-  const dt = new Date(gy, gm - 1, gd);
+  const dt = new Date(gy, gm - 1, gd, h, min, sec);
   return Number.isNaN(dt.getTime()) ? null : dt.toISOString();
 }