Add README, customization snapshot, and snapshot/restore tooling

Provisioning now restores all GUI customizations on reset+reprovision:

- create_pod_espocrm.sh: deploy the version-controlled espocrm-custom/ tree
  (CTag entity, layouts, i18n, clientDefs, custom views, custom CSS) into the
  pod, then chown www-data and rebuild. Replaces the earlier inline CSS-only
  step. Adds a live-phase cache rebuild so customizations and the client
  cacheTimestamp are refreshed on every run.
- espocrm-custom/: snapshot of custom/ and client/custom/ (source of truth).
- snapshot_espocrm_custom.sh: refresh the snapshot from a running pod.
- readme.md: usage, first-time host setup, image-update and reset workflows.
- Include the task/instruction notes and plan.md for reference.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

espocrm-custom/custom/Espo/Custom/Resources/i18n/en_US/Account.json

@@ -0,0 +1,10 @@
+{
+    "fields": {
+        "cAgentur": "Agentur",
+        "cTags": "Tags"
+    },
+    "links": {
+        "cAgentur": "Agentur",
+        "cTags": "Tags"
+    }
+}

espocrm-custom/custom/Espo/Custom/Resources/i18n/en_US/CTag.json

@@ -0,0 +1,15 @@
+{
+    "labels": {
+        "Create CTag": "Create Tag"
+    },
+    "fields": {
+        "verkaufschancen": "Verkaufschancen",
+        "kontakte": "Kontakte",
+        "firmen": "Firmen"
+    },
+    "links": {
+        "verkaufschancen": "Verkaufschancen",
+        "kontakte": "Kontakte",
+        "firmen": "Firmen"
+    }
+}

espocrm-custom/custom/Espo/Custom/Resources/i18n/en_US/Contact.json

@@ -0,0 +1,8 @@
+{
+    "fields": {
+        "cTags": "Tags"
+    },
+    "links": {
+        "cTags": "Tags"
+    }
+}

espocrm-custom/custom/Espo/Custom/Resources/i18n/en_US/Global.json

@@ -0,0 +1,8 @@
+{
+    "scopeNames": {
+        "CTag": "Tag"
+    },
+    "scopeNamesPlural": {
+        "CTag": "Tags"
+    }
+}

espocrm-custom/custom/Espo/Custom/Resources/i18n/en_US/Opportunity.json

@@ -0,0 +1,39 @@
+{
+    "fields": {
+        "cLeadQuelle": "Lead-Quelle",
+        "cVerlustgrund": "Verlustgrund",
+        "cProjektlink": "Projektlink",
+        "cVerguetungsmodell": "Vergütungsmodell",
+        "cAccount1": "Über Agentur",
+        "cTags": "Tags"
+    },
+    "options": {
+        "cLeadQuelle": {
+            "Inbound Agentur": "Inbound Agentur",
+            "Inbound Plattform-Lead": "Inbound Plattform-Lead",
+            "Aktive Plattform-Suche": "Aktive Plattform-Suche",
+            "Aktive Akquise": "Aktive Akquise",
+            "Empfehlung / Netzwerk": "Empfehlung / Netzwerk",
+            "Sonstiges": "Sonstiges"
+        },
+        "cVerlustgrund": {
+            "Agentur Absage": "Agentur Absage",
+            "Kunde Absage": "Kunde Absage",
+            "Keine Einigung": "Keine Einigung",
+            "Eigene Absage": "Eigene Absage",
+            "Sonstiges": "Sonstiges",
+            "Agentur Ghosted": "Agentur Ghosted",
+            "Kunde Ghosted": "Kunde Ghosted"
+        },
+        "cVerguetungsmodell": {
+            "Agentur Honorar": "Agentur Honorar",
+            "Direkt Festpreis": "Direkt Festpreis",
+            "Direkt Honorar": "Direkt Honorar",
+            "Direkt Nutzenbasiert": "Direkt Nutzenbasiert"
+        }
+    },
+    "links": {
+        "cAccount1": "Über Agentur",
+        "cTags": "Tags"
+    }
+}