Implement relational owner securing logic and persistence

2026-04-29 21:02:25 +02:00 · 2026-04-29 21:02:25 +02:00 · b824c8ea73
parent 9164281cfb
commit b824c8ea73
38 changed files with 2080 additions and 12 deletions
--- a/app.js
+++ b/app.js
@ -1271,12 +1271,23 @@ document.addEventListener('DOMContentLoaded', async () => {
            selectFirstName.innerHTML = optionsHtml;
            selectLastName.innerHTML = optionsHtml;

-            // Smart Defaults: Try to find keys starting with V for First Name and N for Last Name
-            const vMatch = sortedKeys.find(k => k.toLowerCase().startsWith('v'));
-            const nMatch = sortedKeys.find(k => k.toLowerCase().startsWith('n'));
+            // Smart Defaults: Prefer VNA for First Name and NBA (or GNA/Name) for Last Name
+            const vnaMatch = sortedKeys.find(k => k.toLowerCase() === 'vna');
+            const nbaMatch = sortedKeys.find(k => k.toLowerCase() === 'nba');
+            const gnaMatch = sortedKeys.find(k => k.toLowerCase() === 'gna');

-            if (vMatch) selectFirstName.value = vMatch;
-            if (nMatch) selectLastName.value = nMatch;
+            if (vnaMatch) selectFirstName.value = vnaMatch;
+            else {
+                const vMatch = sortedKeys.find(k => k.toLowerCase().startsWith('v'));
+                if (vMatch) selectFirstName.value = vMatch;
+            }
+
+            if (nbaMatch) selectLastName.value = nbaMatch;
+            else if (gnaMatch) selectLastName.value = gnaMatch;
+            else {
+                const nMatch = sortedKeys.find(k => k.toLowerCase().startsWith('n'));
+                if (nMatch) selectLastName.value = nMatch;
+            }
        } else {
            selectFirstName.innerHTML = '<option value="">Keine Spalten gefunden</option>';
            selectLastName.innerHTML = '<option value="">Keine Spalten gefunden</option>';
@ -1306,8 +1317,10 @@ document.addEventListener('DOMContentLoaded', async () => {
            const last = p[state.ownerMapping.lastName] || '';
            const fullName = `${first} ${last}`.trim() || "Unbekannt";

-            if (!owners[fullName]) owners[fullName] = 0;
-            owners[fullName]++;
+            if (!owners[fullName]) {
+                owners[fullName] = { count: 0, first, last };
+            }
+            owners[fullName].count++;
        });

        renderOwnerRows(owners);
@ -1325,12 +1338,12 @@ document.addEventListener('DOMContentLoaded', async () => {
    function renderOwnerRows(owners) {
        ownerTableBody.innerHTML = '';
        Object.keys(owners).sort().forEach(name => {
-            const count = owners[name];
+            const data = owners[name];
            const status = state.ownerStatuses[name] || 'none';
            const row = document.createElement('tr');
            row.innerHTML = `
                <td><b>${name}</b></td>
-                <td>${count} Flurstücke</td>
+                <td>${data.count} Flurstücke</td>
                <td>
                    <select class="status-select" data-owner="${name}">
                        <option value="none" ${status === 'none' ? 'selected' : ''}>Kein Status</option>
@ -1341,17 +1354,26 @@ document.addEventListener('DOMContentLoaded', async () => {
                        <option value="undecided" ${status === 'undecided' ? 'selected' : ''}>Unentschlossen</option>
                    </select>
                </td>
+                <td>
+                    <button class="btn-secure" data-first="${data.first}" data-last="${data.last}" style="padding: 4px 8px; font-size: 0.75rem; background: var(--primary-color); color: white; border: none; border-radius: 4px; cursor: pointer;">Sichern</button>
+                </td>
            `;
            ownerTableBody.appendChild(row);
        });

        // Add event listeners to dropdowns
        document.querySelectorAll('.status-select').forEach(sel => {
-            sel.onchange = (e) => {
+            sel.onchange = async (e) => {
                const name = e.target.dataset.owner;
                const status = e.target.value;
                state.ownerStatuses[name] = status;

+                // Sync with DB
+                const data = owners[name];
+                if (data) {
+                    await secureOwner(data.first, data.last, e.target, status);
+                }
+
                // Refresh map style
                const ownerLayerName = Object.keys(overlays).find(k => k.toLowerCase().includes('eigentümer'));
                if (ownerLayerName) {
@ -1359,6 +1381,68 @@ document.addEventListener('DOMContentLoaded', async () => {
                }
            };
        });
+
+        // Add event listeners to secure buttons
+        document.querySelectorAll('.btn-secure').forEach(btn => {
+            btn.onclick = async (e) => {
+                const first = e.target.dataset.first;
+                const last = e.target.dataset.last;
+                await secureOwner(first, last, e.target);
+            };
+        });
+    }
+
+    async function secureOwner(vorname, nachname, element, status = 'Gesichert') {
+        const isButton = element.tagName === 'BUTTON';
+        const originalText = isButton ? element.innerText : "";
+        if (isButton) {
+            element.innerText = "Wait...";
+            element.disabled = true;
+        }
+
+        const projekt_id = "BWSamern-Ohne";
+
+        try {
+            const response = await fetch('/api/sicherung', {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({ vorname, nachname, projekt_id, status })
+            });
+
+            const result = await response.json();
+            if (response.ok) {
+                if (isButton) {
+                    element.style.background = '#2ecc71';
+                    element.innerText = "✓ Gesichert";
+                }
+                console.log(result.message);
+                
+                const fullName = `${vorname} ${nachname}`.trim();
+                state.ownerStatuses[fullName] = status;
+                
+                const ownerLayerName = Object.keys(overlays).find(k => k.toLowerCase().includes('eigentümer'));
+                if (ownerLayerName) {
+                    overlays[ownerLayerName].setStyle(overlays[ownerLayerName].options.style);
+                }
+                
+                const select = document.querySelector(`.status-select[data-owner="${fullName}"]`);
+                if (select) select.value = status;
+
+            } else {
+                throw new Error(result.error || "Fehler");
+            }
+        } catch (err) {
+            console.error(err);
+            if (isButton) {
+                element.style.background = '#e74c3c';
+                element.innerText = "Error";
+                setTimeout(() => {
+                    element.style.background = '';
+                    element.innerText = originalText;
+                    element.disabled = false;
+                }, 2000);
+            }
+        }
    }

    async function handleFileSelection(fileList) {
@ -1411,9 +1495,34 @@ document.addEventListener('DOMContentLoaded', async () => {
        }
    });

-    initDynamicLayers();
+    async function loadOwnerStatusesFromDB() {
+        const projekt_id = "BWSamern-Ohne";
+        console.log("Lade Eigentümer-Status aus Datenbank...");
+        try {
+            const response = await fetch(`/api/sicherung/${projekt_id}`);
+            if (response.ok) {
+                const statuses = await response.json();
+                statuses.forEach(s => {
+                    const fullName = `${s.vorname} ${s.nachname}`.trim();
+                    state.ownerStatuses[fullName] = s.status;
+                });
+                console.log(`${statuses.length} Eigentümer-Status geladen.`);
+                
+                // Refresh map style if owner layer exists
+                const ownerLayerName = Object.keys(overlays).find(k => k.toLowerCase().includes('eigentümer'));
+                if (ownerLayerName && overlays[ownerLayerName]) {
+                    overlays[ownerLayerName].setStyle(overlays[ownerLayerName].options.style);
+                }
+            }
+        } catch (err) {
+            console.error("Fehler beim Laden der Status:", err);
+        }
+    }

-    console.log("Messwerkzeuge bereit.");
+    initDynamicLayers().then(() => {
+        loadOwnerStatusesFromDB();
+        loadTurbinesFromDB();
+    });

    // Project Persistence
    const btnSave = document.getElementById('btnSaveProject');
--- a/backend/.env.template
+++ b/backend/.env.template
@ -0,0 +1,5 @@
+DB_HOST=87.106.21.21
+DB_PORT=5432
+DB_NAME=ihre_datenbank
+DB_USER=ihr_benutzer
+DB_PASSWORD=ihr_passwort
--- a/backend/add_variante_column.js
+++ b/backend/add_variante_column.js
@ -0,0 +1,22 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        await client.query("ALTER TABLE geodaten.wea_standorte ADD COLUMN IF NOT EXISTS variante VARCHAR(10)");
+        console.log('Column variante added successfully');
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/alter_column_type.js
+++ b/backend/alter_column_type.js
@ -0,0 +1,22 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        await client.query("ALTER TABLE geodaten.wea_standorte ALTER COLUMN ksf_drehung TYPE DOUBLE PRECISION");
+        console.log('Changed ksf_drehung to DOUBLE PRECISION');
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_bwscheddebrock_wea.js
+++ b/backend/check_bwscheddebrock_wea.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT column_name, data_type 
+            FROM information_schema.columns 
+            WHERE table_schema = 'wind_projekt_bwscheddebrock' AND table_name = 'wea';
+        `);
+        console.log("Columns for wind_projekt_bwscheddebrock.wea:");
+        res.rows.forEach(r => console.log(`${r.column_name}: ${r.data_type}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_columns_full.js
+++ b/backend/check_columns_full.js
@ -0,0 +1,22 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query("SELECT column_name FROM information_schema.columns WHERE table_schema = 'geodaten' AND table_name = 'wea_standorte'");
+        console.log(res.rows);
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_db_content.js
+++ b/backend/check_db_content.js
@ -0,0 +1,23 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query("SELECT * FROM geodaten.wea_standorte");
+        console.log(`Found ${res.rowCount} rows.`);
+        console.log(res.rows);
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_default.js
+++ b/backend/check_default.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT column_name, column_default
+            FROM information_schema.columns
+            WHERE table_schema = 'geodaten' AND table_name = 'flaecheneigentuemer_status'
+            AND column_name = 'id';
+        `);
+        console.log("Default for id:", res.rows[0].column_default);
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_entries.js
+++ b/backend/check_entries.js
@ -0,0 +1,25 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT * FROM geodaten.wea_standorte;
+        `);
+        console.log("Entries in geodaten.wea_standorte:");
+        console.log(JSON.stringify(res.rows, null, 2));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_geodata_db.js
+++ b/backend/check_geodata_db.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'geodata'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_schema, table_name 
+            FROM information_schema.tables 
+            WHERE table_name ILIKE '%wea%';
+        `);
+        console.log("Tables with 'wea' in geodata database:");
+        res.rows.forEach(r => console.log(`${r.table_schema}.${r.table_name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_id_default.js
+++ b/backend/check_id_default.js
@ -0,0 +1,22 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query("SELECT column_name, column_default FROM information_schema.columns WHERE table_schema = 'geodaten' AND table_name = 'wea_standorte' AND column_name = 'id'");
+        console.log(res.rows);
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_projects.js
+++ b/backend/check_projects.js
@ -0,0 +1,28 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_schema, table_name 
+            FROM information_schema.tables 
+            WHERE table_name LIKE '%projekt%'
+            AND table_schema NOT IN ('information_schema', 'pg_catalog');
+        `);
+        console.log("Project related tables:");
+        res.rows.forEach(r => console.log(`${r.table_schema}.${r.table_name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_sample_data.js
+++ b/backend/check_sample_data.js
@ -0,0 +1,24 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT * FROM geodaten.flaecheneigentuemer_alkis LIMIT 5;
+        `);
+        console.log(JSON.stringify(res.rows, null, 2));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/check_srid.js
+++ b/backend/check_srid.js
@ -0,0 +1,26 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT srid FROM geometry_columns 
+            WHERE f_table_schema = 'geodaten' AND f_table_name = 'wea_standorte';
+        `);
+        console.log("SRID of geodaten.wea_standorte.geom:");
+        res.rows.forEach(r => console.log(r.srid));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/cleanup_db.js
+++ b/backend/cleanup_db.js
@ -0,0 +1,23 @@
+const { Client } = require('pg');
+
+async function clean() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        console.log("Cleaning up test entries...");
+        const res = await client.query("DELETE FROM geodaten.wea_standorte WHERE projekt_id LIKE '%Test%' OR wea_nummer = 'TEST-1'");
+        console.log(`Cleaned ${res.rowCount} rows.`);
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+clean();
--- a/backend/inspect_db.js
+++ b/backend/inspect_db.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+const client = new Client({
+  host: '87.106.21.21',
+  port: 5432,
+  database: 'enwelo',
+  user: 'postgres',
+  password: ''
+});
+
+async function run() {
+  try {
+    await client.connect();
+    const res = await client.query(`
+      SELECT column_name, data_type 
+      FROM information_schema.columns 
+      WHERE table_schema = 'geodaten' AND table_name = 'wea';
+    `);
+    console.log(res.rows);
+  } catch (err) {
+    console.error(err);
+  } finally {
+    await client.end();
+  }
+}
+
+run();
--- a/backend/inspect_db2.js
+++ b/backend/inspect_db2.js
@ -0,0 +1,27 @@
+require('dotenv').config();
+const postgres = require('postgres');
+
+const sql = postgres({
+  host: process.env.DB_HOST || '87.106.21.21',
+  port: process.env.DB_PORT || 5432,
+  database: process.env.DB_NAME || 'enwelo',
+  username: process.env.DB_USER || 'postgres',
+  password: process.env.DB_PASSWORD || ''
+});
+
+async function run() {
+  try {
+    const res = await sql`
+      SELECT column_name, data_type 
+      FROM information_schema.columns 
+      WHERE table_schema = 'geodaten' AND table_name = 'wea';
+    `;
+    console.log(res);
+  } catch (err) {
+    console.error(err);
+  } finally {
+    await sql.end();
+  }
+}
+
+run();
--- a/backend/inspect_geodaten_schema.js
+++ b/backend/inspect_geodaten_schema.js
@ -0,0 +1,46 @@
+const { Client } = require('pg');
+
+async function inspect() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const tables = [
+            'geodaten.flaecheneigentuemer_alkis',
+            'geodaten.flaecheneigentuemer_alkis_zuweisung',
+            'geodaten.flaecheneigentuemer_status'
+        ];
+
+        for (const table of tables) {
+            const [schema, name] = table.split('.');
+            console.log(`\n--- Structure of ${table} ---`);
+            const res = await client.query(`
+                SELECT column_name, data_type, is_nullable
+                FROM information_schema.columns
+                WHERE table_schema = $1 AND table_name = $2
+                ORDER BY ordinal_position;
+            `, [schema, name]);
+            res.rows.forEach(r => console.log(`${r.column_name}: ${r.data_type} (${r.is_nullable})`));
+        }
+
+        console.log(`\n--- Views in geodaten ---`);
+        const viewsRes = await client.query(`
+            SELECT table_name 
+            FROM information_schema.views 
+            WHERE table_schema = 'geodaten';
+        `);
+        viewsRes.rows.forEach(r => console.log(r.table_name));
+
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+inspect();
--- a/backend/inspect_projekte.js
+++ b/backend/inspect_projekte.js
@ -0,0 +1,31 @@
+const { Client } = require('pg');
+
+async function inspect() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT column_name, data_type, is_nullable
+            FROM information_schema.columns
+            WHERE table_schema = 'geodaten' AND table_name = 'projekte'
+            ORDER BY ordinal_position;
+        `);
+        res.rows.forEach(r => console.log(`${r.column_name}: ${r.data_type} (${r.is_nullable})`));
+        
+        console.log("\nSample data:");
+        const data = await client.query("SELECT id, name FROM geodaten.projekte LIMIT 5");
+        data.rows.forEach(r => console.log(`${r.id}: ${r.name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+inspect();
--- a/backend/inspect_view.js
+++ b/backend/inspect_view.js
@ -0,0 +1,28 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT column_name, data_type
+            FROM information_schema.columns
+            WHERE table_schema = 'geodaten' AND table_name = 'v_projekt_sicherung'
+            ORDER BY ordinal_position;
+        `);
+        console.log("Columns in v_projekt_sicherung:");
+        res.rows.forEach(r => console.log(`${r.column_name}: ${r.data_type}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_all_tables.js
+++ b/backend/list_all_tables.js
@ -0,0 +1,28 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT schemaname, tablename 
+            FROM pg_tables 
+            WHERE schemaname NOT IN ('pg_catalog', 'information_schema')
+            ORDER BY schemaname, tablename;
+        `);
+        console.log("ALL Tables in enwelo database:");
+        res.rows.forEach(r => console.log(`${r.schemaname}.${r.tablename}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_columns_alkis.js
+++ b/backend/list_columns_alkis.js
@ -0,0 +1,26 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT column_name
+            FROM information_schema.columns
+            WHERE table_schema = 'geodaten' AND table_name = 'flaecheneigentuemer_alkis';
+        `);
+        console.log(res.rows.map(r => r.column_name).join(', '));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_geodata_tables.js
+++ b/backend/list_geodata_tables.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'geodata'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_schema, table_name 
+            FROM information_schema.tables 
+            WHERE table_schema NOT IN ('information_schema', 'pg_catalog');
+        `);
+        console.log("Tables in geodata database:");
+        res.rows.forEach(r => console.log(`${r.table_schema}.${r.table_name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_public_tables.js
+++ b/backend/list_public_tables.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_name 
+            FROM information_schema.tables 
+            WHERE table_schema = 'public';
+        `);
+        console.log("Tables in public schema:");
+        res.rows.forEach(r => console.log(r.table_name));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_tables_standort.js
+++ b/backend/list_tables_standort.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_name 
+            FROM information_schema.tables 
+            WHERE table_schema = 'wind_tool_standortprüfung';
+        `);
+        console.log("Tables in wind_tool_standortprüfung:");
+        res.rows.forEach(r => console.log(r.table_name));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/list_tables_trassen.js
+++ b/backend/list_tables_trassen.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_name 
+            FROM information_schema.tables 
+            WHERE table_schema = 'wind_tool_trassenplaner';
+        `);
+        console.log("Tables in wind_tool_trassenplaner:");
+        res.rows.forEach(r => console.log(r.table_name));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/package-lock.json
+++ b/backend/package-lock.json
@ -0,0 +1,999 @@
+{
+  "name": "backend",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "body-parser": "^2.2.2",
+        "dotenv": "^17.4.2",
+        "express": "^5.2.1",
+        "pg": "^8.20.0",
+        "postgres": "^3.4.9"
+      }
+    },
+    "node_modules/accepts": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/accepts/-/accepts-2.0.0.tgz",
+      "integrity": "sha512-5cvg6CtKwfgdmVqY1WIiXKc3Q1bkRqGLi+2W/6ao+6Y7gu/RCwRuAhGEzh5B4KlszSuTLgZYuqFqo5bImjNKng==",
+      "license": "MIT",
+      "dependencies": {
+        "mime-types": "^3.0.0",
+        "negotiator": "^1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/body-parser": {
+      "version": "2.2.2",
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+      "license": "MIT",
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+        "qs": "^6.14.1",
+        "raw-body": "^3.0.1",
+        "type-is": "^2.0.1"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
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+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.2.tgz",
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+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/call-bind-apply-helpers": {
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+      "license": "MIT",
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+        "es-errors": "^1.3.0",
+        "function-bind": "^1.1.2"
+      },
+      "engines": {
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+        "unpipe": "~1.0.0"
+      },
+      "engines": {
+        "node": ">= 0.10"
+      }
+    },
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+      "license": "MIT",
+      "dependencies": {
+        "debug": "^4.4.0",
+        "depd": "^2.0.0",
+        "is-promise": "^4.0.0",
+        "parseurl": "^1.3.3",
+        "path-to-regexp": "^8.0.0"
+      },
+      "engines": {
+        "node": ">= 18"
+      }
+    },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
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+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "license": "MIT"
+    },
+    "node_modules/send": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/send/-/send-1.2.1.tgz",
+      "integrity": "sha512-1gnZf7DFcoIcajTjTwjwuDjzuz4PPcY2StKPlsGAQ1+YH20IRVrBaXSWmdjowTJ6u8Rc01PoYOGHXfP1mYcZNQ==",
+      "license": "MIT",
+      "dependencies": {
+        "debug": "^4.4.3",
+        "encodeurl": "^2.0.0",
+        "escape-html": "^1.0.3",
+        "etag": "^1.8.1",
+        "fresh": "^2.0.0",
+        "http-errors": "^2.0.1",
+        "mime-types": "^3.0.2",
+        "ms": "^2.1.3",
+        "on-finished": "^2.4.1",
+        "range-parser": "^1.2.1",
+        "statuses": "^2.0.2"
+      },
+      "engines": {
+        "node": ">= 18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
+    "node_modules/serve-static": {
+      "version": "2.2.1",
+      "resolved": "https://registry.npmjs.org/serve-static/-/serve-static-2.2.1.tgz",
+      "integrity": "sha512-xRXBn0pPqQTVQiC8wyQrKs2MOlX24zQ0POGaj0kultvoOCstBQM5yvOhAVSUwOMjQtTvsPWoNCHfPGwaaQJhTw==",
+      "license": "MIT",
+      "dependencies": {
+        "encodeurl": "^2.0.0",
+        "escape-html": "^1.0.3",
+        "parseurl": "^1.3.3",
+        "send": "^1.2.0"
+      },
+      "engines": {
+        "node": ">= 18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
+      }
+    },
+    "node_modules/setprototypeof": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.2.0.tgz",
+      "integrity": "sha512-E5LDX7Wrp85Kil5bhZv46j8jOeboKq5JMmYM3gVGdGH8xFpPWXUMsNrlODCrkoxMEeNi/XZIwuRvY4XNwYMJpw==",
+      "license": "ISC"
+    },
+    "node_modules/side-channel": {
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/side-channel/-/side-channel-1.1.0.tgz",
+      "integrity": "sha512-ZX99e6tRweoUXqR+VBrslhda51Nh5MTQwou5tnUDgbtyM0dBgmhEDtWGP/xbKn6hqfPRHujUNwz5fy/wbbhnpw==",
+      "license": "MIT",
+      "dependencies": {
+        "es-errors": "^1.3.0",
+        "object-inspect": "^1.13.3",
+        "side-channel-list": "^1.0.0",
+        "side-channel-map": "^1.0.1",
+        "side-channel-weakmap": "^1.0.2"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/side-channel-list": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/side-channel-list/-/side-channel-list-1.0.1.tgz",
+      "integrity": "sha512-mjn/0bi/oUURjc5Xl7IaWi/OJJJumuoJFQJfDDyO46+hBWsfaVM65TBHq2eoZBhzl9EchxOijpkbRC8SVBQU0w==",
+      "license": "MIT",
+      "dependencies": {
+        "es-errors": "^1.3.0",
+        "object-inspect": "^1.13.4"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/side-channel-map": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/side-channel-map/-/side-channel-map-1.0.1.tgz",
+      "integrity": "sha512-VCjCNfgMsby3tTdo02nbjtM/ewra6jPHmpThenkTYh8pG9ucZ/1P8So4u4FGBek/BjpOVsDCMoLA/iuBKIFXRA==",
+      "license": "MIT",
+      "dependencies": {
+        "call-bound": "^1.0.2",
+        "es-errors": "^1.3.0",
+        "get-intrinsic": "^1.2.5",
+        "object-inspect": "^1.13.3"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/side-channel-weakmap": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/side-channel-weakmap/-/side-channel-weakmap-1.0.2.tgz",
+      "integrity": "sha512-WPS/HvHQTYnHisLo9McqBHOJk2FkHO/tlpvldyrnem4aeQp4hai3gythswg6p01oSoTl58rcpiFAjF2br2Ak2A==",
+      "license": "MIT",
+      "dependencies": {
+        "call-bound": "^1.0.2",
+        "es-errors": "^1.3.0",
+        "get-intrinsic": "^1.2.5",
+        "object-inspect": "^1.13.3",
+        "side-channel-map": "^1.0.1"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/split2": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/split2/-/split2-4.2.0.tgz",
+      "integrity": "sha512-UcjcJOWknrNkF6PLX83qcHM6KHgVKNkV62Y8a5uYDVv9ydGQVwAHMKqHdJje1VTWpljG0WYpCDhrCdAOYH4TWg==",
+      "license": "ISC",
+      "engines": {
+        "node": ">= 10.x"
+      }
+    },
+    "node_modules/statuses": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/statuses/-/statuses-2.0.2.tgz",
+      "integrity": "sha512-DvEy55V3DB7uknRo+4iOGT5fP1slR8wQohVdknigZPMpMstaKJQWhwiYBACJE3Ul2pTnATihhBYnRhZQHGBiRw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/toidentifier": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.1.tgz",
+      "integrity": "sha512-o5sSPKEkg/DIQNmH43V0/uerLrpzVedkUh8tGNvaeXpfpuwjKenlSox/2O/BTlZUtEe+JG7s5YhEz608PlAHRA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.6"
+      }
+    },
+    "node_modules/type-is": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/type-is/-/type-is-2.0.1.tgz",
+      "integrity": "sha512-OZs6gsjF4vMp32qrCbiVSkrFmXtG/AZhY3t0iAMrMBiAZyV9oALtXO8hsrHbMXF9x6L3grlFuwW2oAz7cav+Gw==",
+      "license": "MIT",
+      "dependencies": {
+        "content-type": "^1.0.5",
+        "media-typer": "^1.1.0",
+        "mime-types": "^3.0.0"
+      },
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/unpipe": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
+      "integrity": "sha512-pjy2bYhSsufwWlKwPc+l3cN7+wuJlK6uz0YdJEOlQDbl6jo/YlPi4mb8agUkVC8BF7V8NuzeyPNqRksA3hztKQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/vary": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
+      "integrity": "sha512-BNGbWLfd0eUPabhkXUVm0j8uuvREyTh5ovRa/dyow/BqAbZJyC+5fU+IzQOzmAKzYqYRAISoRhdQr3eIZ/PXqg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 0.8"
+      }
+    },
+    "node_modules/wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
+      "license": "ISC"
+    },
+    "node_modules/xtend": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
+      "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.4"
+      }
+    }
+  }
+}
--- a/backend/package.json
+++ b/backend/package.json
@ -0,0 +1,9 @@
+{
+  "dependencies": {
+    "body-parser": "^2.2.2",
+    "dotenv": "^17.4.2",
+    "express": "^5.2.1",
+    "pg": "^8.20.0",
+    "postgres": "^3.4.9"
+  }
+}
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@ -0,0 +1,2 @@
+psycopg2-binary
+python-dotenv
--- a/backend/search_wea_matviews.js
+++ b/backend/search_wea_matviews.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT schemaname, matviewname 
+            FROM pg_matviews 
+            WHERE matviewname ILIKE '%wea%';
+        `);
+        console.log("Materialized Views with 'wea' in their name:");
+        res.rows.forEach(r => console.log(`${r.schemaname}.${r.matviewname}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/search_wea_pg_tables.js
+++ b/backend/search_wea_pg_tables.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT schemaname, tablename 
+            FROM pg_tables 
+            WHERE tablename ILIKE '%wea%';
+        `);
+        console.log("Tables with 'wea' in their name (pg_tables):");
+        res.rows.forEach(r => console.log(`${r.schemaname}.${r.tablename}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/search_wea_tables.js
+++ b/backend/search_wea_tables.js
@ -0,0 +1,28 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_schema, table_name 
+            FROM information_schema.tables 
+            WHERE table_name ILIKE '%wea%'
+            ORDER BY table_schema, table_name;
+        `);
+        console.log("Tables with 'wea' in their name:");
+        res.rows.forEach(r => console.log(`${r.table_schema}.${r.table_name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/search_wea_views.js
+++ b/backend/search_wea_views.js
@ -0,0 +1,27 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query(`
+            SELECT table_schema, table_name 
+            FROM information_schema.views 
+            WHERE table_name ILIKE '%wea%';
+        `);
+        console.log("Views with 'wea' in their name:");
+        res.rows.forEach(r => console.log(`${r.table_schema}.${r.table_name}`));
+    } catch (e) {
+        console.error("Error:", e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/test_db_insert.js
+++ b/backend/test_db_insert.js
@ -0,0 +1,43 @@
+const { Client } = require('pg');
+
+async function test_insert() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        console.log("Connected to DB.");
+        
+        const projekt_id = "BWSamern-Ohne-Test";
+        const lat = 52.3;
+        const lng = 7.1;
+        
+        await client.query('BEGIN');
+        await client.query('DELETE FROM geodaten.wea_standorte WHERE projekt_id = $1', [projekt_id]);
+        
+        console.log("Inserting test row...");
+        await client.query(
+            `INSERT INTO geodaten.wea_standorte (
+                wea_nummer, anlagentyp, nabenhoehe, rotordurchmesser, projekt_id, geom
+            ) VALUES ($1, $2, $3, $4, $5, ST_Transform(ST_SetSRID(ST_MakePoint($6, $7), 4326), 25832))`,
+            ['TEST-1', 'Vestas V162', 169, 162, projekt_id, lng, lat]
+        );
+        
+        await client.query('COMMIT');
+        console.log("Insert successful!");
+        
+        const res = await client.query('SELECT *, ST_AsText(ST_Transform(geom, 4326)) as geom_wgs84 FROM geodaten.wea_standorte WHERE projekt_id = $1', [projekt_id]);
+        console.log("Verified entry:", JSON.stringify(res.rows, null, 2));
+        
+    } catch (e) {
+        console.error("Test failed:", e);
+    } finally {
+        await client.end();
+    }
+}
+test_insert();
--- a/backend/test_insert.js
+++ b/backend/test_insert.js
@ -0,0 +1,23 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        const res = await client.query("INSERT INTO geodaten.wea_standorte (projekt_id, wea_nummer, anlagentyp, nabenhoehe, rotordurchmesser, geom) VALUES ($1, $2, $3, $4, $5, ST_Transform(ST_SetSRID(ST_MakePoint($6, $7), 4326), 25832)) RETURNING id", 
+            ['BWSamern-Ohne', 'TEST-2', 'Vestas', 160, 160, 7.3, 52.3]);
+        console.log('Inserted ID:', res.rows[0].id);
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/backend/update_rotation.js
+++ b/backend/update_rotation.js
@ -0,0 +1,22 @@
+const { Client } = require('pg');
+
+async function check() {
+    const client = new Client({
+        host: '87.106.21.21',
+        port: 5432,
+        user: 'enwelo_admin',
+        password: 'WX1t1cgP1qK09',
+        database: 'enwelo'
+    });
+    
+    try {
+        await client.connect();
+        await client.query("UPDATE geodaten.wea_standorte SET ksf_drehung = 45 WHERE wea_nummer = 'TEST-2'");
+        console.log('Updated TEST-2 rotation to 45');
+    } catch (e) {
+        console.error(e);
+    } finally {
+        await client.end();
+    }
+}
+check();
--- a/index.html
+++ b/index.html
@ -235,6 +235,7 @@
                                <th>Name</th>
                                <th>Flächen</th>
                                <th>Status</th>
+                                <th>Aktion</th>
                            </tr>
                        </thead>
                        <tbody></tbody>
--- a/server.js
+++ b/server.js
@ -113,6 +113,113 @@ app.get('/api/wea/:projekt_id', async (req, res) => {
    }
 });

+// Hilfsfunktion zur Auflösung von Projekt-ID oder Name
+async function resolveProjectId(client, input) {
+    // Prüfen, ob input eine valide UUID ist
+    const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;
+    if (uuidRegex.test(input)) return input;
+
+    // Sonst in der Projekte-Tabelle nach Name suchen
+    const res = await client.query('SELECT id FROM geodaten.projekte WHERE name = $1 OR name = $2', [input, input.toLowerCase()]);
+    return res.rows.length > 0 ? res.rows[0].id : null;
+}
+
+// API zur Flächensicherung von Eigentümern
+app.post('/api/sicherung', async (req, res) => {
+    const { nachname, vorname, projekt_id, status } = req.body;
+    const targetStatus = status || 'Gesichert';
+    const schema = process.env.DB_SCHEMA || 'geodaten';
+    
+    log(`Sicherungs-Request: ${vorname} ${nachname} Status='${targetStatus}' für Projekt ${projekt_id}`);
+
+    const client = await pool.connect();
+    try {
+        await client.query('BEGIN');
+        
+        // 1. Projekt-ID auflösen
+        const resolvedPid = await resolveProjectId(client, projekt_id);
+        if (!resolvedPid) {
+            throw new Error(`Projekt '${projekt_id}' konnte nicht gefunden werden.`);
+        }
+
+        // 2. FSKs für den Namen finden
+        const ownerRes = await client.query(
+            `SELECT "FSK" FROM ${schema}.flaecheneigentuemer_alkis WHERE "GNA" = $1 AND "VNA" = $2`,
+            [nachname, vorname]
+        );
+        
+        const fsks = ownerRes.rows.map(r => r.FSK);
+        if (fsks.length === 0) {
+            log(`Keine Flurstücke für ${vorname} ${nachname} gefunden.`);
+            await client.query('ROLLBACK');
+            return res.status(404).json({ error: 'Keine Flurstücke für diesen Namen gefunden.' });
+        }
+
+        log(`Gefunden: ${fsks.length} Flurstücke für ${vorname} ${nachname}. Prüfe Zuweisung...`);
+
+        // 3. Zuweisung prüfen und Status schreiben
+        let securedCount = 0;
+        for (const fsk of fsks) {
+            const assignmentRes = await client.query(
+                `SELECT 1 FROM ${schema}.flaecheneigentuemer_alkis_zuweisung WHERE fsk = $1 AND projekt_id = $2`,
+                [fsk, resolvedPid]
+            );
+            
+            if (assignmentRes.rowCount > 0) {
+                await client.query(
+                    `INSERT INTO ${schema}.flaecheneigentuemer_status (id, fsk, projekt_id, status, datum) 
+                     VALUES (gen_random_uuid(), $1, $2, $3, NOW())`,
+                    [fsk, resolvedPid, targetStatus]
+                );
+                securedCount++;
+            }
+        }
+
+        await client.query('COMMIT');
+        log(`Erfolgreich: ${securedCount} von ${fsks.length} Flurstücken als '${targetStatus}' markiert.`);
+        res.json({ 
+            message: `${securedCount} Flurstücke für ${vorname} ${nachname} erfolgreich als '${targetStatus}' markiert.`,
+            count: securedCount,
+            total_found: fsks.length
+        });
+    } catch (err) {
+        await client.query('ROLLBACK');
+        log(`FEHLER bei Sicherung: ${err.message}`);
+        res.status(500).json({ error: 'Fehler bei der Flächensicherung', details: err.message });
+    } finally {
+        client.release();
+    }
+});
+
+// API zum Laden der Sicherungsstände
+app.get('/api/sicherung/:projekt_id', async (req, res) => {
+    const { projekt_id } = req.params;
+    log(`Lade Sicherungsstände für Projekt: ${projekt_id}`);
+    
+    const client = await pool.connect();
+    try {
+        const resolvedPid = await resolveProjectId(client, projekt_id);
+        if (!resolvedPid) {
+            throw new Error(`Projekt '${projekt_id}' konnte nicht gefunden werden.`);
+        }
+
+        const result = await client.query(
+            `SELECT vorname, nachname, aktueller_status as status 
+             FROM geodaten.v_projekt_sicherung 
+             WHERE projekt_id = $1`,
+            [resolvedPid]
+        );
+        
+        log(`Geladen: ${result.rowCount} Status-Einträge.`);
+        res.json(result.rows);
+    } catch (e) {
+        log(`FEHLER beim Laden der Stände: ${e.message}`);
+        res.status(500).json({ error: e.message });
+    } finally {
+        client.release();
+    }
+});
+
 // Catch-all route to serve index.html for any other request (optional, good for SPAs)
 app.get('*', (req, res) => {
  res.sendFile(path.join(__dirname, 'index.html'));