fix: dataforth API upload — unregistered model skip list, batch-500 fallback, FAIL filter

- UNREGISTERED_MODELS set: 9 model numbers not in Hoffman API catalog; skipped
  silently instead of generating errors
- batch-500 fallback: when a bulk batch returns HTTP 500, retry each record
  individually so good records get stamped and only truly-bad records count
  as errors
- FAIL-parameter filter: records with any FAIL on a parameter line are excluded
  from the push before the batch is assembled
- notify.js integration: wired in existing notification module

Files added:
- projects/dataforth-dos/database/upload-to-api.js
- projects/dataforth-dos/database/notify.js

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

projects/dataforth-dos/database/notify.js

@@ -0,0 +1,71 @@
+/**
+ * Fire-and-forget alert notification module.
+ * Email sending is not yet implemented (Entra app pending).
+ * Logs a formatted preview of what would be emailed to stderr.
+ * Never throws — callers do not need to guard this.
+ */
+
+const os = require('os');
+
+const TO      = 'mike@azcomputerguru.com';
+const FROM    = 'sysadmin@dataforth.com';
+const HOST    = os.hostname();
+const PREFIX  = '[NOTIFY]';
+const SEP_EQ  = '='.repeat(60);
+const SEP_DAS = '-'.repeat(60);
+
+/**
+ * Log a formatted email preview to stderr.
+ *
+ * @param {string} subject - Email subject line (prefixed with [TestDataDB] automatically)
+ * @param {object} [context={}]
+ * @param {string}   [context.stage]   - Pipeline stage where the alert fired
+ * @param {string}   [context.error]   - Error message or description
+ * @param {string[]} [context.details] - Additional detail lines
+ * @param {object}   [context.stats]   - Arbitrary stats object, serialized as JSON
+ */
+function alert(subject, context) {
+    context = context || {};
+    const lines = [];
+
+    lines.push(`${PREFIX} ${SEP_EQ}`);
+    lines.push(`${PREFIX} TO:      ${TO}`);
+    lines.push(`${PREFIX} FROM:    ${FROM} (pending Entra app)`);
+    lines.push(`${PREFIX} SUBJECT: [TestDataDB] ${subject}`);
+    lines.push(`${PREFIX} ${SEP_DAS}`);
+    lines.push(`${PREFIX} Host:    ${HOST}`);
+    lines.push(`${PREFIX} Time:    ${new Date().toISOString()}`);
+
+    if (context.stage !== undefined) {
+        lines.push(`${PREFIX} Stage:   ${context.stage}`);
+    }
+
+    if (context.error !== undefined) {
+        lines.push(`${PREFIX}`);
+        lines.push(`${PREFIX} ${context.error}`);
+    }
+
+    if (Array.isArray(context.details) && context.details.length > 0) {
+        lines.push(`${PREFIX}`);
+        for (const line of context.details) {
+            lines.push(`${PREFIX} ${line}`);
+        }
+    }
+
+    if (context.stats !== undefined) {
+        lines.push(`${PREFIX} Stats:   ${JSON.stringify(context.stats)}`);
+    }
+
+    lines.push(`${PREFIX} ${SEP_EQ}`);
+    lines.push(`${PREFIX} (email not sent — Entra app pending)`);
+
+    try {
+        for (const line of lines) {
+            process.stderr.write(line + '\n');
+        }
+    } catch (_) {
+        // stderr write failure — nothing we can do
+    }
+}
+
+module.exports = { alert };