Fix BOM workbook monthly totals

Service Tiering slide no longer falls back to the workload `name`
field for the tier label, which previously rendered "Bronze Bronze"
when the spec only carried tier names. Uptime/RTO/RPO now fill from
tier defaults when the spec omits them.

Architecture Principles slide enriches caller-supplied items with
name + summary from the KB when only the principle id is given,
instead of rendering bare placeholders like "P-01 P-02".

Architecture Overview slide auto-builds a two-region visual when the
proposal spec names a `dr_region` but doesn't pre-render `architecture.visual`,
so DR is no longer dropped from the deck.

Diagram generator gained a region-level `local_dr` flag that adds a
"Local DR Standby" dormant node inside the region, and now auto-wires
an "RPC (Remote Peering)" edge between DRGs when the spec defines
two or more regions with DRGs but no manual peering connection.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tools/oci_bom_gen.py

@@ -204,6 +204,17 @@ class OCIBomGenerator:
     def _col_count(self) -> int:
         return len(self._col_defs())
 
+    @staticmethod
+    def _monthly_values(item: dict) -> tuple[float, float]:
+        """Return monthly values with and without discount for one BOM line."""
+        price = float(item.get("list_price_usd", 0) or 0)
+        hours_units = float(item.get("hours_units", 0) or 0)
+        qty = float(item.get("qty", 0) or 0)
+        discount = float(item.get("discount", 0) or 0)
+        monthly_wo = price * hours_units * qty
+        monthly_w = monthly_wo * (1 - discount)
+        return monthly_wo, monthly_w
+
     def _build_sheet(self, ws):
         """Build the complete BOM sheet."""
         ws.title = "BOM"
@@ -325,6 +336,11 @@ class OCIBomGenerator:
             if cat_key not in render_order:
                 render_order.append(cat_key)
 
+        grand_total_wo = 0.0
+        grand_total_w = 0.0
+        grand_total_conv_wo = 0.0
+        grand_total_conv_w = 0.0
+
         for cat_key in render_order:
             if cat_key not in items_by_cat:
                 continue
@@ -344,6 +360,10 @@ class OCIBomGenerator:
             row += 1
 
             cat_first_data = row
+            cat_total_wo = 0.0
+            cat_total_w = 0.0
+            cat_total_conv_wo = 0.0
+            cat_total_conv_w = 0.0
 
             for idx, item in enumerate(cat_items):
                 # Static data
@@ -356,38 +376,22 @@ class OCIBomGenerator:
                 ws.cell(row=row, column=COL_MONTHS, value=item["months"])
                 ws.cell(row=row, column=COL_DISC, value=item["discount"])
 
-                # Formula: Monthly w/o discount = Price × Hours × Qty
-                p = get_column_letter(COL_PRICE)
-                h = get_column_letter(COL_HOURS)
-                q = get_column_letter(COL_QTY)
-                d = get_column_letter(COL_DISC)
-                ws.cell(
-                    row=row, column=COL_M_WO,
-                    value=f"={p}{row}*{h}{row}*{q}{row}",
-                )
-
-                # Formula: Monthly w/ discount = Monthly_wo × (1 - Discount)
-                mwo = get_column_letter(COL_M_WO)
-                ws.cell(
-                    row=row, column=COL_M_W,
-                    value=f"={mwo}{row}*(1-{d}{row})",
-                )
+                monthly_wo, monthly_w = self._monthly_values(item)
+                ws.cell(row=row, column=COL_M_WO, value=monthly_wo)
+                ws.cell(row=row, column=COL_M_W, value=monthly_w)
+                cat_total_wo += monthly_wo
+                cat_total_w += monthly_w
 
                 # Conversion formulas
                 if conv:
                     xr = self.conversion.get("exchange_rate", 1)
                     tr = self.conversion.get("tax_rate", 0)
-                    mw = get_column_letter(COL_M_W)
-                    # Converted w/o tax
-                    ws.cell(
-                        row=row, column=COL_CONV_WO,
-                        value=f"={mw}{row}*{xr}",
-                    )
-                    # Converted w/ tax
-                    ws.cell(
-                        row=row, column=COL_CONV_W,
-                        value=f"={get_column_letter(COL_CONV_WO)}{row}*(1+{tr})",
-                    )
+                    conv_wo = monthly_w * xr
+                    conv_w = conv_wo * (1 + tr)
+                    ws.cell(row=row, column=COL_CONV_WO, value=conv_wo)
+                    ws.cell(row=row, column=COL_CONV_W, value=conv_w)
+                    cat_total_conv_wo += conv_wo
+                    cat_total_conv_w += conv_w
 
                 # Styling per row
                 is_alt = idx % 2 == 1
@@ -419,20 +423,20 @@ class OCIBomGenerator:
             # Category subtotal row
             cat_last_data = row - 1
             ws.cell(row=row, column=COL_PRODUCT, value=f"Subtotal — {display_name}")
-            mwo_letter = get_column_letter(COL_M_WO)
-            mw_letter = get_column_letter(COL_M_W)
-            ws.cell(row=row, column=COL_M_WO, value=f"=SUM({mwo_letter}{cat_first_data}:{mwo_letter}{cat_last_data})")
-            ws.cell(row=row, column=COL_M_W, value=f"=SUM({mw_letter}{cat_first_data}:{mw_letter}{cat_last_data})")
+            ws.cell(row=row, column=COL_M_WO, value=cat_total_wo)
+            ws.cell(row=row, column=COL_M_W, value=cat_total_w)
             ws.cell(row=row, column=COL_M_WO).number_format = '$#,##0.00'
             ws.cell(row=row, column=COL_M_W).number_format = '$#,##0.00'
+            grand_total_wo += cat_total_wo
+            grand_total_w += cat_total_w
 
             if conv:
-                cwo_letter = get_column_letter(COL_CONV_WO)
-                cw_letter = get_column_letter(COL_CONV_W)
-                ws.cell(row=row, column=COL_CONV_WO, value=f"=SUM({cwo_letter}{cat_first_data}:{cwo_letter}{cat_last_data})")
-                ws.cell(row=row, column=COL_CONV_W, value=f"=SUM({cw_letter}{cat_first_data}:{cw_letter}{cat_last_data})")
+                ws.cell(row=row, column=COL_CONV_WO, value=cat_total_conv_wo)
+                ws.cell(row=row, column=COL_CONV_W, value=cat_total_conv_w)
                 ws.cell(row=row, column=COL_CONV_WO).number_format = '#,##0.00'
                 ws.cell(row=row, column=COL_CONV_W).number_format = '#,##0.00'
+                grand_total_conv_wo += cat_total_conv_wo
+                grand_total_conv_w += cat_total_conv_w
 
             for ci in range(1, num_cols + 1):
                 cell = ws.cell(row=row, column=ci)
@@ -448,19 +452,14 @@ class OCIBomGenerator:
         total_row = row
         ws.cell(row=row, column=COL_PRODUCT, value="TOTAL").font = total_font
 
-        # Sum of subtotals
-        mwo_refs = "+".join(f"{get_column_letter(COL_M_WO)}{r}" for r in cat_subtotal_rows)
-        mw_refs = "+".join(f"{get_column_letter(COL_M_W)}{r}" for r in cat_subtotal_rows)
-        ws.cell(row=row, column=COL_M_WO, value=f"={mwo_refs}")
-        ws.cell(row=row, column=COL_M_W, value=f"={mw_refs}")
+        ws.cell(row=row, column=COL_M_WO, value=grand_total_wo)
+        ws.cell(row=row, column=COL_M_W, value=grand_total_w)
         ws.cell(row=row, column=COL_M_WO).number_format = '$#,##0.00'
         ws.cell(row=row, column=COL_M_W).number_format = '$#,##0.00'
 
         if conv:
-            cwo_refs = "+".join(f"{get_column_letter(COL_CONV_WO)}{r}" for r in cat_subtotal_rows)
-            cw_refs = "+".join(f"{get_column_letter(COL_CONV_W)}{r}" for r in cat_subtotal_rows)
-            ws.cell(row=row, column=COL_CONV_WO, value=f"={cwo_refs}")
-            ws.cell(row=row, column=COL_CONV_W, value=f"={cw_refs}")
+            ws.cell(row=row, column=COL_CONV_WO, value=grand_total_conv_wo)
+            ws.cell(row=row, column=COL_CONV_W, value=grand_total_conv_w)
             ws.cell(row=row, column=COL_CONV_WO).number_format = '#,##0.00'
             ws.cell(row=row, column=COL_CONV_W).number_format = '#,##0.00'
 
@@ -476,15 +475,13 @@ class OCIBomGenerator:
         ws.cell(row=row, column=COL_PRODUCT, value="Annual Run Rate (ARR)").font = Font(
             name="Segoe UI", size=11, bold=True, color=Colors.COPPER
         )
-        mw_total = get_column_letter(COL_M_W)
-        ws.cell(row=row, column=COL_M_W, value=f"={mw_total}{total_row}*12")
+        ws.cell(row=row, column=COL_M_W, value=grand_total_w * 12)
         ws.cell(row=row, column=COL_M_W).number_format = '$#,##0.00'
         ws.cell(row=row, column=COL_M_W).font = Font(
             name="Segoe UI", size=11, bold=True, color=Colors.COPPER
         )
         if conv:
-            cw_total = get_column_letter(COL_CONV_W)
-            ws.cell(row=row, column=COL_CONV_W, value=f"={cw_total}{total_row}*12")
+            ws.cell(row=row, column=COL_CONV_W, value=grand_total_conv_w * 12)
             ws.cell(row=row, column=COL_CONV_W).number_format = '#,##0.00'
             ws.cell(row=row, column=COL_CONV_W).font = Font(
                 name="Segoe UI", size=11, bold=True, color=Colors.COPPER
@@ -630,11 +627,9 @@ class OCIBomGenerator:
                 ws_bom.cell(row=row, column=9, value=item["months"])
                 ws_bom.cell(row=row, column=10, value=item["discount"])
 
-                # Formulas matching BOM.C1 style
-                ws_bom.cell(row=row, column=11,
-                            value="=(F{r}*G{r}*H{r})".format(r=row))
-                ws_bom.cell(row=row, column=12,
-                            value="=IFERROR(K{r}*(1-J{r}),K{r})".format(r=row))
+                monthly_wo, monthly_w = self._monthly_values(item)
+                ws_bom.cell(row=row, column=11, value=monthly_wo)
+                ws_bom.cell(row=row, column=12, value=monthly_w)
 
                 # Formats
                 ws_bom.cell(row=row, column=6).number_format = '#,##0.0000'

tools/oci_deck_gen.py

@@ -17,6 +17,7 @@ Or import and use programmatically:
 
 import yaml
 import argparse
+import re
 from datetime import datetime
 from pathlib import Path
 from typing import Optional
@@ -118,6 +119,21 @@ def _default_architecture_principles() -> dict:
     return result if any(result.values()) else {}
 
 
+def _principles_kb_index() -> dict:
+    """Index every KB principle by id so spec items with only id get enriched."""
+    data = _load_patterns_yaml("architecture-principles.yaml")
+    principles = data.get("principles", {}) if isinstance(data, dict) else {}
+    index = {}
+    for cat_items in principles.values():
+        for p in cat_items or []:
+            if isinstance(p, dict) and p.get("id"):
+                index[str(p["id"])] = {
+                    "name": p.get("name", ""),
+                    "summary": p.get("principle", p.get("summary", "")),
+                }
+    return index
+
+
 def _default_operational_raci(model: str = "co_managed") -> list:
     data = _load_patterns_yaml("operational-raci.yaml")
     models = data.get("models", {}) if isinstance(data, dict) else {}
@@ -171,6 +187,13 @@ _HA_DR_BY_TIER = {
     },
 }
 
+_UPTIME_BY_TIER = {
+    "platinum": "99.99%",
+    "gold": "99.95%",
+    "silver": "99.9%",
+    "bronze": "99.5%",
+}
+
 
 def _derive_ha_dr_tiers(workloads: list) -> list:
     """Produce one HA/DR row per distinct service tier present."""
@@ -236,6 +259,167 @@ def _derive_service_tiering(services: list) -> list:
     return workloads
 
 
+def _timeline_to_weeks(timeline: str) -> int | None:
+    """Parse a simple duration phrase like '12 weeks' or '6 months'."""
+    if not timeline:
+        return None
+    text = str(timeline).lower()
+    match = re.search(r"(\d+)\s*(week|weeks|month|months)", text)
+    if not match:
+        return None
+    amount = int(match.group(1))
+    unit = match.group(2)
+    return amount * 4 if unit.startswith("month") else amount
+
+
+def _proposal_default_migration(timeline: str = "") -> dict:
+    """Generate a conservative Define/Design/Deliver plan from total duration."""
+    total_weeks = _timeline_to_weeks(timeline)
+    if total_weeks and total_weeks >= 6:
+        define = max(1, round(total_weeks * 0.2))
+        design = max(1, round(total_weeks * 0.3))
+        deliver = max(1, total_weeks - define - design)
+        total_duration = f"{total_weeks} weeks"
+    else:
+        define, design, deliver = 2, 4, 6
+        total_duration = timeline or "12 weeks (to validate)"
+    return {
+        "total_duration": total_duration,
+        "phases": [
+            {
+                "name": "Define",
+                "duration": f"{define} weeks",
+                "tasks": [
+                    "Validate scope and business drivers",
+                    "Baseline current estate and constraints",
+                    "Confirm success criteria and migration assumptions",
+                ],
+            },
+            {
+                "name": "Design",
+                "duration": f"{design} weeks",
+                "tasks": [
+                    "Finalize target architecture and landing zone",
+                    "Confirm security, DR, and networking approach",
+                    "Validate sizing and migration wave plan",
+                ],
+            },
+            {
+                "name": "Deliver",
+                "duration": f"{deliver} weeks",
+                "tasks": [
+                    "Execute migration waves and rehearsals",
+                    "Run cutover and stabilization",
+                    "Complete operations handover",
+                ],
+            },
+        ],
+        "downtime": "Confirm cutover window with application owners during design.",
+    }
+
+
+def _proposal_default_risks(summary: dict) -> list:
+    """Infer generic-but-grounded proposal risks from sparse summary text."""
+    text_parts = [
+        pick(summary, "why"),
+        pick(summary, "target_state"),
+        pick(summary, "timeline"),
+        *coerce_list(summary.get("current_state")),
+    ]
+    text = " ".join(str(p) for p in text_parts if p).lower()
+    risks = []
+
+    if any(token in text for token in ("legacy", "on-prem", "on premises", "migration")):
+        risks.append({
+            "risk": "Current-state migration scope may be larger than initially captured.",
+            "severity": "HIGH",
+            "mitigation": "Complete application and database discovery before locking the wave plan.",
+        })
+    if any(token in text for token in ("dr", "disaster recovery", "rto", "rpo", "resilien")):
+        risks.append({
+            "risk": "Resilience objectives need explicit validation against the proposed operating model.",
+            "severity": "MEDIUM",
+            "mitigation": "Confirm RTO/RPO targets and rehearse failover before production cutover.",
+        })
+    if any(token in text for token in ("cost", "budget", "tco", "byol", "payg")):
+        risks.append({
+            "risk": "Commercial assumptions may diverge from the customer's actual utilization baseline.",
+            "severity": "MEDIUM",
+            "mitigation": "Validate sizing, discount, and licensing assumptions with finance and platform owners.",
+        })
+    if any(token in text for token in ("team", "skill", "operations", "dba", "cloud")):
+        risks.append({
+            "risk": "Day-2 operating responsibilities may be unclear for the delivery team.",
+            "severity": "MEDIUM",
+            "mitigation": "Review the co-managed RACI and confirm ownership before the pilot starts.",
+        })
+
+    if not risks:
+        risks.append({
+            "risk": "Incomplete discovery details can force late design changes.",
+            "severity": "MEDIUM",
+            "mitigation": "Run a discovery checkpoint before committing to procurement or migration dates.",
+        })
+    return risks[:4]
+
+
+def _proposal_default_next_steps(summary: dict) -> list:
+    timeline = pick(summary, "timeline")
+    steps = [
+        "Review the proposal with technical and business stakeholders.",
+        "Validate current-state inventory, sizing, and dependency assumptions.",
+        "Confirm the target delivery model and success criteria for the first wave.",
+    ]
+    if timeline:
+        steps.append(f"Reconcile the plan against the stated timeline ({timeline}).")
+    steps.append("Decide whether to proceed with a proof of concept or detailed design workshop.")
+    return steps[:5]
+
+
+def _enrich_partial_proposal_spec(spec: dict) -> dict:
+    """Add safe fallback sections so sparse proposal specs still render usable decks."""
+    if not isinstance(spec, dict):
+        return spec
+
+    summary = spec.get("summary")
+    if not isinstance(summary, dict):
+        return spec
+
+    target_state = pick(summary, "target_state")
+    has_context = bool(target_state or pick(summary, "why") or coerce_list(summary.get("current_state")))
+    if not has_context:
+        return spec
+
+    enriched = dict(spec)
+
+    if "architecture" not in enriched and target_state:
+        enriched["architecture"] = {"description": target_state}
+
+    if "architecture_principles" not in enriched:
+        principles = _default_architecture_principles()
+        if principles:
+            enriched["architecture_principles"] = principles
+
+    if "migration" not in enriched:
+        enriched["migration"] = _proposal_default_migration(pick(summary, "timeline"))
+
+    if not any(k in enriched for k in ("operational_raci", "raci", "operations_raci")):
+        raci_items = _default_operational_raci("co_managed")
+        if raci_items:
+            enriched["operational_raci"] = {
+                "model": "co_managed",
+                "raci_items": raci_items,
+            }
+
+    if "risks" not in enriched:
+        enriched["risks"] = _proposal_default_risks(summary)
+
+    if "next_steps" not in enriched:
+        enriched["next_steps"] = {"steps": _proposal_default_next_steps(summary)}
+
+    return enriched
+
+
 def _adapt_flat_spec(spec: dict) -> dict:
     """Map the MCP flat payload to the proposal-spec structure from_spec expects."""
     arch = spec.get("architecture") if isinstance(spec.get("architecture"), dict) else {}
@@ -836,17 +1020,22 @@ class OCIDeckGenerator(OraclePresBase):
             row_idx = i + 1
             bg = Colors.TABLE_ALT_ROW if row_idx % 2 == 0 else None
             workload_name = pick(wl, "name", "workload", "title")
+            tier_label = pick(wl, "tier", "service_tier", default="Silver")
+            tier_key = tier_label.lower()
+            tier_color = tier_colors.get(tier_key, Colors.SECONDARY_TEXT)
+            tier_defaults = _HA_DR_BY_TIER.get(tier_key, {})
+            uptime = wl.get("uptime") or _UPTIME_BY_TIER.get(tier_key, "")
+            rto = wl.get("rto") or tier_defaults.get("rto", "")
+            rpo = wl.get("rpo") or tier_defaults.get("rpo", "")
             self._style_table_cell(table.cell(row_idx, 0), workload_name, font_size=10, bold=True, bg_color=bg)
-            tier_label = pick(wl, "tier", "name", default="Silver")
-            tier_color = tier_colors.get(tier_label.lower(), Colors.SECONDARY_TEXT)
             self._style_table_cell(
                 table.cell(row_idx, 1), tier_label.title(),
                 font_size=10, bold=True, color=tier_color, bg_color=bg,
                 alignment=PP_ALIGN.CENTER,
             )
-            self._style_table_cell(table.cell(row_idx, 2), wl.get("uptime", ""), font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
-            self._style_table_cell(table.cell(row_idx, 3), wl.get("rto", ""), font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
-            self._style_table_cell(table.cell(row_idx, 4), wl.get("rpo", ""), font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
+            self._style_table_cell(table.cell(row_idx, 2), uptime, font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
+            self._style_table_cell(table.cell(row_idx, 3), rto, font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
+            self._style_table_cell(table.cell(row_idx, 4), rpo, font_size=10, bg_color=bg, alignment=PP_ALIGN.CENTER)
 
     def add_architecture_principles_slide(self, principles: dict):
         """Architecture Principles slide — ECAL Design/Deployment/Service categories.
@@ -857,6 +1046,8 @@ class OCIDeckGenerator(OraclePresBase):
         slide = self._add_blank_slide()
         self._add_title_bar(slide, "Architecture Principles", margin=self.MARGIN)
 
+        kb_index = _principles_kb_index()
+
         y = Inches(1.2)
         col_x = self.MARGIN
         col_width = Inches(4)
@@ -877,7 +1068,11 @@ class OCIDeckGenerator(OraclePresBase):
             for item in items:
                 pid = item.get("id", "")
                 name = item.get("name", "")
-                summary = item.get("summary", "")
+                summary = item.get("summary", "") or item.get("principle", "")
+                if pid and (not name or not summary):
+                    fallback = kb_index.get(str(pid), {})
+                    name = name or fallback.get("name", "")
+                    summary = summary or fallback.get("summary", "")
                 label = f"{pid}  {name}" if pid else name
                 if summary:
                     label += f" — {summary}"
@@ -1588,6 +1783,8 @@ class OCIDeckGenerator(OraclePresBase):
         # with actual content instead of only blank title/closing slides.
         if _is_flat_spec(spec):
             spec = _adapt_flat_spec(spec)
+        else:
+            spec = _enrich_partial_proposal_spec(spec)
 
         meta = spec.get("metadata", {})
         gen = cls(
@@ -1622,10 +1819,43 @@ class OCIDeckGenerator(OraclePresBase):
         # Slide 5: Architecture
         if "architecture" in spec:
             a = spec["architecture"]
+            visual = a.get("visual")
+            description = a.get("description", "")
+            primary_region = (
+                spec.get("primary_region")
+                or spec.get("region")
+                or a.get("primary_region")
+                or a.get("region")
+                or ""
+            )
+            dr_region = (
+                spec.get("dr_region")
+                or spec.get("secondary_region")
+                or a.get("dr_region")
+                or a.get("secondary_region")
+                or ""
+            )
+            # Auto-build a two-region visual when the spec names a DR region
+            # but didn't pre-render the visual structure itself.
+            if dr_region and not visual:
+                visual = {
+                    "regions": [
+                        {"name": primary_region or "Primary", "primary": True, "label": "PRIMARY"},
+                        {"name": dr_region, "primary": False, "label": "DR STANDBY"},
+                    ],
+                }
+            elif dr_region and isinstance(visual, dict):
+                regions = visual.get("regions") or []
+                names = {str(r.get("name", "")).lower() for r in regions if isinstance(r, dict)}
+                if dr_region.lower() not in names:
+                    regions.append({"name": dr_region, "primary": False, "label": "DR STANDBY"})
+                    visual["regions"] = regions
+            if dr_region and description and dr_region.lower() not in description.lower():
+                description = f"{description}  •  DR region: {dr_region}"
             gen.add_architecture_slide(
                 diagram_path=a.get("diagram_path"),
-                description=a.get("description", ""),
-                visual=a.get("visual"),
+                description=description,
+                visual=visual,
             )
 
         # Slide 6: Decisions

tools/oci_diagram_gen.py

@@ -300,6 +300,8 @@ SVC_CATEGORY = {
     # Integration (purple #804998)
     "drg": "svc_integration",
     "dynamic_routing_gateway": "svc_integration",
+    "rpc": "svc_integration",
+    "remote_peering_connection": "svc_integration",
     "streaming": "svc_integration", "kafka": "svc_integration",
     "queue": "svc_integration", "oci_queue": "svc_integration",
     "oic": "svc_integration", "integration_cloud": "svc_integration",
@@ -1640,6 +1642,7 @@ class OCIDiagramGenerator:
 
         # Regions — auto-size containers from content when spec doesn't override
         region_x_cursor = 15  # tracks right edge for auto-positioning next region
+        drg_by_region = []  # list of (region_id, drg_id) for cross-region RPC auto-wiring
         for region in tenancy_spec.get("regions", []):
             is_primary = region.get("primary", False)
             rx = region.get("x", region_x_cursor)
@@ -1700,6 +1703,18 @@ class OCIDiagramGenerator:
                 auto_rw = total_vcn_w + drg_lane_w + 50  # margins
                 auto_rh = total_vcn_h + 70  # 45 top (label) + 25 bottom
 
+            # Local DR standby (same region as primary) — adds a dormant
+            # node below the VCNs. Bump auto-height to make room.
+            local_dr = bool(region.get("local_dr") or region.get("local_dr_standby"))
+            if not local_dr:
+                for v in region_vcns:
+                    if v.get("local_dr") or v.get("local_dr_standby"):
+                        local_dr = True
+                        break
+            local_dr_h = 90 if local_dr else 0
+            if local_dr:
+                auto_rh += local_dr_h
+
             # Always use at least auto-calculated size even if spec is smaller
             rw = max(region.get("w", auto_rw), auto_rw)
             rh = max(region.get("h", auto_rh), auto_rh)
@@ -1738,6 +1753,7 @@ class OCIDiagramGenerator:
                         drg_id, label, drg["type"],
                         region["id"], drg_x, drg_y, drg_w, drg_h,
                     )
+                    drg_by_region.append((region["id"], drg_id))
 
             # VCNs — offset right if DRG lane present
             vcn_offset_x = drg_lane_w + 15
@@ -1832,6 +1848,25 @@ class OCIDiagramGenerator:
 
                     subnet_y += sh + SUBNET_GAP
 
+            # Local DR standby — render a dormant node inside the region
+            # at the bottom-right corner so it's visually clear that the
+            # primary has a same-region failover target.
+            if local_dr:
+                standby_w = 160
+                standby_h = 70
+                standby_x = max(15, rw - standby_w - 20)
+                standby_y = rh - standby_h - 15
+                standby_label = (
+                    region.get("local_dr_label")
+                    or region.get("local_dr_standby_label")
+                    or "Local DR\nStandby"
+                )
+                standby_id = region.get("local_dr_id") or gen._next_id()
+                gen.add_service(
+                    standby_id, standby_label, "standby",
+                    region["id"], standby_x, standby_y, standby_w, standby_h,
+                )
+
             # Compartments inside region — can contain VCNs
             for comp in region.get("compartments", []):
                 comp_id = comp.get("id", gen._next_id())
@@ -1939,9 +1974,39 @@ class OCIDiagramGenerator:
                 )
                 opx += svc_w + 12
 
+        # Cross-region RPC — when 2+ regions own a DRG and the spec didn't
+        # already wire a peering link between them, auto-add a "Remote
+        # Peering Connection" edge for each pair so the cross-region path
+        # is visible in the diagram.
+        connections = spec.get("connections", [])
+        if len(drg_by_region) >= 2:
+            existing_pairs = {
+                (c.get("from"), c.get("to")) for c in connections
+                if isinstance(c, dict)
+            }
+            existing_pairs |= {(b, a) for (a, b) in existing_pairs}
+            seen_drgs_per_region = {}
+            for region_id, drg_id in drg_by_region:
+                seen_drgs_per_region.setdefault(region_id, []).append(drg_id)
+            region_ids = list(seen_drgs_per_region.keys())
+            for i in range(len(region_ids)):
+                for j in range(i + 1, len(region_ids)):
+                    src = seen_drgs_per_region[region_ids[i]][0]
+                    tgt = seen_drgs_per_region[region_ids[j]][0]
+                    if (src, tgt) in existing_pairs:
+                        continue
+                    connections = list(connections) + [{
+                        "id": f"rpc_{src}_{tgt}",
+                        "from": src,
+                        "to": tgt,
+                        "type": "network",
+                        "label": "RPC\n(Remote Peering)",
+                    }]
+                    existing_pairs.add((src, tgt))
+                    existing_pairs.add((tgt, src))
+
         # Connections — merge duplicate from/to pairs (e.g., dual FastConnect)
         # into a single edge with combined label
-        connections = spec.get("connections", [])
         seen_pairs = {}  # (from, to) -> index in deduped list
         deduped = []
         for conn in connections: