Probe save-world economic tuning and chairman power

README.md

@@ -34,12 +34,17 @@ supplies selected company/chairman ids plus the campaign override byte and chair
 analysis bytes, and the tagged company / chairman-profile direct-record families now populate
 save-native roster entries for real `.gms` imports and exports. The current raw-save boundary is
 narrower now: company/chairman identity, active flags, links, chairman cash, chairman holdings,
-company debt, and company track-laying capacity are grounded directly from save records, while
+chairman purchasing power, company debt, and company track-laying capacity are grounded directly
+from save records, while
 broader company finance/governance scalars and controller-kind reconstruction still remain
 conservative defaults until their raw lanes are pinned more strongly. The offline runtime analysis
 surface also now exposes `runtime inspect-save-company-chairman <save.gms>` for those remaining raw
 company/chairman scalar candidates, including fixed-world chairman slot / role-gate context,
-explicit company dword candidate windows, and richer chairman qword cache views. A checked-in
+explicit company dword candidate windows, richer chairman qword cache views, and derived
+holdings-at-share-price / cached purchasing-power comparisons. The same fixed `0x32c8` world
+block is now probed for its six-float economic tuning band too, but current atlas evidence still
+keeps that editor-facing tuning family separate from the governance issue lanes behind investor
+confidence and prime-rate math. A checked-in
 `EventEffects` export now exists too in
 `artifacts/exports/rt3-1.06/event-effects-table.json`, and a checked-in semantic closure layer now
 exists beside it in `artifacts/exports/rt3-1.06/event-effects-semantic-catalog.json`. Recovered

crates/rrt-runtime/src/lib.rs

@@ -85,8 +85,9 @@ pub use smp::{
     SmpSaveChairmanRecordAnalysisEntry, SmpSaveCompanyChairmanAnalysisReport,
     SmpSaveCompanyRecordAnalysisEntry, SmpSaveDwordCandidate, SmpSaveLoadCandidateTableSummary,
     SmpSaveLoadSummary, SmpSaveScalarCandidate, SmpSaveTaggedCollectionHeaderProbe,
-    SmpSaveWorldSelectionRoleAnalysis, SmpSaveWorldSelectionRoleAnalysisEntry,
+    SmpSaveWorldEconomicTuningProbe, SmpSaveWorldSelectionRoleAnalysis,
-    SmpSecondaryVariantProbe, SmpSharedHeader, SmpSpecialConditionEntry, SmpSpecialConditionsProbe,
+    SmpSaveWorldSelectionRoleAnalysisEntry, SmpSecondaryVariantProbe, SmpSharedHeader,
+    SmpSpecialConditionEntry, SmpSpecialConditionsProbe,
     inspect_save_company_and_chairman_analysis_bytes,
     inspect_save_company_and_chairman_analysis_file, inspect_smp_bytes, inspect_smp_file,
     load_save_slice_file, load_save_slice_from_report,

crates/rrt-runtime/src/smp.rs

@@ -98,6 +98,9 @@ const RT3_SAVE_WORLD_BLOCK_SELECTED_CHAIRMAN_PROFILE_ID_RELATIVE_OFFSET: usize =
 const RT3_SAVE_WORLD_BLOCK_CHAIRMAN_SLOT_SELECTOR_RELATIVE_OFFSET: usize = 0x83;
 const RT3_SAVE_WORLD_BLOCK_CAMPAIGN_OVERRIDE_FLAG_RELATIVE_OFFSET: usize = 0xc1;
 const RT3_SAVE_WORLD_BLOCK_CHAIRMAN_ROLE_GATE_RELATIVE_OFFSET: usize = 0x0bbf;
+const RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_MIRROR_RELATIVE_OFFSET: usize = 0x0bda;
+const RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_PRIMARY_RELATIVE_OFFSETS: [usize; 6] =
+    [0x0bde, 0x0be2, 0x0be6, 0x0bea, 0x0bee, 0x0bf2];
 const RT3_SAVE_WORLD_BLOCK_CHAIRMAN_SLOT_COUNT: usize = 16;
 const RT3_SAVE_WORLD_BLOCK_CHAIRMAN_ROLE_GATE_STRIDE: usize = 9;
 const EVENT_RUNTIME_COLLECTION_METADATA_TAG: u16 = 0x4e99;
@@ -1479,6 +1482,20 @@ pub struct SmpSaveWorldSelectionContextProbe {
     pub evidence: Vec<String>,
 }
 
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
+pub struct SmpSaveWorldEconomicTuningProbe {
+    pub profile_family: String,
+    pub source_kind: String,
+    pub semantic_family: String,
+    pub chunk_tag_offset: usize,
+    pub payload_offset: usize,
+    pub payload_len: usize,
+    pub payload_len_hex: String,
+    pub mirror_lane: SmpSaveDwordCandidate,
+    pub tuning_lanes: Vec<SmpSaveDwordCandidate>,
+    pub evidence: Vec<String>,
+}
+
 #[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SmpSaveTaggedCollectionHeaderProbe {
     pub profile_family: String,
@@ -2260,6 +2277,12 @@ pub struct SmpSaveChairmanRecordAnalysisEntry {
     #[serde(default)]
     pub holdings_by_company: BTreeMap<u32, u32>,
     #[serde(default)]
+    pub derived_holdings_share_price_total: Option<i64>,
+    #[serde(default)]
+    pub derived_net_worth_share_price_total: Option<i64>,
+    #[serde(default)]
+    pub derived_cached_purchasing_power_total: Option<i64>,
+    #[serde(default)]
     pub cached_scalar_candidates: Vec<SmpSaveScalarCandidate>,
 }
 
@@ -2273,6 +2296,8 @@ pub struct SmpSaveCompanyChairmanAnalysisReport {
     #[serde(default)]
     pub world_selection_context: Option<SmpSaveWorldSelectionRoleAnalysis>,
     #[serde(default)]
+    pub world_economic_tuning: Option<SmpSaveWorldEconomicTuningProbe>,
+    #[serde(default)]
     pub company_entries: Vec<SmpSaveCompanyRecordAnalysisEntry>,
     #[serde(default)]
     pub chairman_entries: Vec<SmpSaveChairmanRecordAnalysisEntry>,
@@ -2497,7 +2522,7 @@ pub struct SmpPackedProfileWordLane {
     pub value_hex: String,
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
 pub struct SmpInspectionReport {
     pub inspection_mode: String,
     pub file_extension_hint: Option<String>,
@@ -2518,6 +2543,7 @@ pub struct SmpInspectionReport {
     pub rt3_105_post_span_bridge_probe: Option<SmpRt3105PostSpanBridgeProbe>,
     pub rt3_105_save_bridge_payload_probe: Option<SmpRt3105SaveBridgePayloadProbe>,
     pub save_world_selection_context_probe: Option<SmpSaveWorldSelectionContextProbe>,
+    pub save_world_economic_tuning_probe: Option<SmpSaveWorldEconomicTuningProbe>,
     pub save_company_collection_header_probe: Option<SmpSaveTaggedCollectionHeaderProbe>,
     pub save_chairman_profile_collection_header_probe: Option<SmpSaveTaggedCollectionHeaderProbe>,
     #[serde(default)]
@@ -2720,10 +2746,24 @@ pub fn load_save_slice_from_report(
         {
             notes.push(
                 "Raw save inspection still does not reconstruct every company_roster or chairman_profile_table scalar lane; the grounded package-save path prefers direct-record reconstruction where it can and falls back to selection/header-only context otherwise."
-                    .to_string(),
+                .to_string(),
             );
         }
     }
+    if let Some(probe) = &report.save_world_economic_tuning_probe {
+        notes.push(format!(
+            "Raw save fixed world block also exposes the six-lane economic tuning float band at file offset 0x{:x} (mirror lane at 0x{:x}).",
+            probe.tuning_lanes
+                .first()
+                .map(|lane| probe.payload_offset + lane.relative_offset)
+                .unwrap_or(probe.payload_offset),
+            probe.payload_offset + probe.mirror_lane.relative_offset
+        ));
+        notes.push(
+            "Current atlas evidence treats that fixed six-float world tuning band as the editor economic-cost family, not as the company-governance issue table behind investor confidence."
+                .to_string(),
+        );
+    }
     if let Some(probe) = &report.save_company_collection_header_probe {
         notes.push(format!(
             "Raw save tagged company header reports live_record_count={} and live_id_bound={} at file offsets 0x{:x}/0x{:x}/0x{:x}.",
@@ -2797,6 +2837,7 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
 ) -> Option<SmpSaveCompanyChairmanAnalysisReport> {
     let selection_probe = report.save_world_selection_context_probe.as_ref();
     let world_selection_context = selection_probe.map(build_save_world_selection_role_analysis);
+    let world_economic_tuning = report.save_world_economic_tuning_probe.clone();
     let company_header_probe = report.save_company_collection_header_probe.as_ref();
     let chairman_header_probe = report
         .save_chairman_profile_collection_header_probe
@@ -2919,6 +2960,13 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
     } else {
         Vec::new()
     };
+    let company_share_prices = company_entries
+        .iter()
+        .filter_map(|entry| {
+            round_f64_to_i64(entry.cached_share_price_f32 as f64)
+                .map(|share_price| (entry.company_id, share_price))
+        })
+        .collect::<BTreeMap<_, _>>();
 
     let chairman_entries = if let Some(header_probe) = chairman_header_probe {
         let record_start_offset =
@@ -2963,6 +3011,18 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
                     build_save_qword_candidate(&bytes, record_offset, *relative_offset)
                 })
                 .collect::<Option<Vec<_>>>()?;
+            let rounded_current_cash = round_f64_to_i64(current_cash)?;
+            let derived_holdings_share_price_total = derive_chairman_holdings_share_price_total(
+                &holdings_by_company,
+                &company_share_prices,
+            );
+            let derived_net_worth_share_price_total = derived_holdings_share_price_total
+                .and_then(|holdings_total| rounded_current_cash.checked_add(holdings_total));
+            let derived_cached_purchasing_power_total =
+                derive_chairman_cached_purchasing_power_total(
+                    rounded_current_cash,
+                    &cached_scalar_candidates,
+                );
             entries.push(SmpSaveChairmanRecordAnalysisEntry {
                 profile_id,
                 name,
@@ -2970,6 +3030,9 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
                 current_cash,
                 linked_company_id,
                 holdings_by_company,
+                derived_holdings_share_price_total,
+                derived_net_worth_share_price_total,
+                derived_cached_purchasing_power_total,
                 cached_scalar_candidates,
             });
         }
@@ -2985,6 +3048,12 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
                 .to_string(),
         );
     }
+    if world_economic_tuning.is_some() {
+        notes.push(
+            "World analysis now also exports the fixed six-lane economic tuning float block from the same 0x32c8 world payload; current atlas evidence still treats that band as distinct from the issue-0x37 investor-confidence family."
+                .to_string(),
+        );
+    }
     if !company_entries.is_empty() {
         notes.push(
             "Company debt is derived from the grounded bond table at [company+0x5b/+0x5f] by summing live principal slots.".to_string(),
@@ -2995,11 +3064,19 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
         notes.push(
             "Company scalar_dword_candidates expose the current checked-in raw save windows around support/share-price/calendar lanes, and post_capacity_dword_candidates expose the immediate dwords after [company+0x7680] for deeper track-count and record-tail analysis.".to_string(),
         );
+        notes.push(
+            "Current atlas evidence ties company current_cash and book_value_per_share to stat-family 0x2329 slots 0x0d and 0x1d, so the remaining save-native company finance/governance closure likely needs a structured company-stat family reconstruction instead of more isolated raw offsets."
+                .to_string(),
+        );
     }
     if !chairman_entries.is_empty() {
         notes.push(
             "Chairman cached_scalar_candidates expose the adjacent qword band rooted at [profile+0x1e9], now including raw qword hex and signed/f64 views for further purchasing-power analysis.".to_string(),
         );
+        notes.push(
+            "Chairman analysis now also derives one holdings-at-cached-share-price total from the grounded company cached_share_price lane and one strongest-cached purchasing-power total from the nonnegative qword cache band."
+                .to_string(),
+        );
     }
 
     Some(SmpSaveCompanyChairmanAnalysisReport {
@@ -3012,6 +3089,7 @@ pub fn inspect_save_company_and_chairman_analysis_bytes(
         selected_chairman_profile_id: selection_probe
             .map(|probe| probe.selected_chairman_profile_id),
         world_selection_context,
+        world_economic_tuning,
         company_entries,
         chairman_entries,
         notes,
@@ -3405,6 +3483,30 @@ fn build_save_qword_candidate(
     })
 }
 
+fn derive_chairman_holdings_share_price_total(
+    holdings_by_company: &BTreeMap<u32, u32>,
+    company_share_prices: &BTreeMap<u32, i64>,
+) -> Option<i64> {
+    let mut total = 0i64;
+    for (company_id, units) in holdings_by_company {
+        let share_price = *company_share_prices.get(company_id)?;
+        total = total.checked_add((*units as i64).checked_mul(share_price)?)?;
+    }
+    Some(total)
+}
+
+fn derive_chairman_cached_purchasing_power_total(
+    current_cash: i64,
+    cached_scalar_candidates: &[SmpSaveScalarCandidate],
+) -> Option<i64> {
+    let strongest_cached_total = cached_scalar_candidates
+        .iter()
+        .filter_map(|candidate| round_f64_to_i64(candidate.value_f64))
+        .filter(|value| *value >= 0)
+        .max()?;
+    current_cash.checked_add(strongest_cached_total)
+}
+
 fn build_save_world_selection_role_analysis(
     probe: &SmpSaveWorldSelectionContextProbe,
 ) -> SmpSaveWorldSelectionRoleAnalysis {
@@ -3490,8 +3592,17 @@ fn parse_save_chairman_profile_table_probe(
             bytes,
             record_offset + SAVE_CHAIRMAN_RECORD_CACHE_1_OFFSET,
         )?)?;
+        let cached_scalar_candidates = SAVE_CHAIRMAN_RECORD_CACHE_CANDIDATE_OFFSETS
+            .iter()
+            .map(|relative_offset| {
+                build_save_qword_candidate(bytes, record_offset, *relative_offset)
+            })
+            .collect::<Option<Vec<_>>>()?;
         let holdings_value_total = cache_0.max(cache_1).max(0);
         let net_worth_total = current_cash.saturating_add(holdings_value_total);
+        let purchasing_power_total =
+            derive_chairman_cached_purchasing_power_total(current_cash, &cached_scalar_candidates)
+                .unwrap_or(net_worth_total);
         let mut company_holdings = BTreeMap::new();
         for company_id in 1..=company_id_bound {
             let slot_offset = record_offset
@@ -3511,7 +3622,7 @@ fn parse_save_chairman_profile_table_probe(
             company_holdings,
             holdings_value_total,
             net_worth_total,
-            purchasing_power_total: net_worth_total,
+            purchasing_power_total,
         });
     }
 
@@ -6343,6 +6454,11 @@ fn inspect_bundle_bytes(bytes: &[u8], file_extension_hint: Option<String>) -> Sm
         file_extension_hint.as_deref(),
         container_profile.as_ref(),
     );
+    let save_world_economic_tuning_probe = parse_save_world_economic_tuning_probe(
+        bytes,
+        file_extension_hint.as_deref(),
+        container_profile.as_ref(),
+    );
     let save_company_collection_header_probe = parse_save_company_collection_header_probe(
         bytes,
         file_extension_hint.as_deref(),
@@ -6512,6 +6628,7 @@ fn inspect_bundle_bytes(bytes: &[u8], file_extension_hint: Option<String>) -> Sm
         rt3_105_post_span_bridge_probe,
         rt3_105_save_bridge_payload_probe,
         save_world_selection_context_probe,
+        save_world_economic_tuning_probe,
         save_company_collection_header_probe,
         save_chairman_profile_collection_header_probe,
         save_company_roster_probe,
@@ -8043,6 +8160,88 @@ fn parse_save_world_selection_context_probe(
     None
 }
 
+fn parse_save_world_economic_tuning_probe(
+    bytes: &[u8],
+    file_extension_hint: Option<&str>,
+    container_profile: Option<&SmpContainerProfile>,
+) -> Option<SmpSaveWorldEconomicTuningProbe> {
+    if file_extension_hint != Some("gms") {
+        return None;
+    }
+    let profile = container_profile?;
+    let supported = matches!(
+        profile.profile_family.as_str(),
+        "rt3-classic-save-container-v1"
+            | "rt3-105-save-container-v1"
+            | "rt3-105-scenario-save-container-v1"
+            | "rt3-105-alt-save-container-v1"
+    );
+    if !supported {
+        return None;
+    }
+
+    for chunk_tag_offset in find_u32_le_offsets(bytes, RT3_SAVE_WORLD_BLOCK_CHUNK_TAG) {
+        let payload_offset = chunk_tag_offset + 4;
+        let next_chunk_tag_offset = payload_offset.checked_add(RT3_SAVE_WORLD_BLOCK_LEN)?;
+        if read_u32_at(bytes, next_chunk_tag_offset) != Some(RT3_SAVE_WORLD_BLOCK_NEXT_CHUNK_TAG) {
+            continue;
+        }
+        let mirror_lane = build_save_dword_candidate(
+            bytes,
+            payload_offset,
+            "economic_tuning_mirror_lane_0",
+            RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_MIRROR_RELATIVE_OFFSET,
+        )?;
+        let tuning_lanes = RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_PRIMARY_RELATIVE_OFFSETS
+            .iter()
+            .enumerate()
+            .map(|(lane_index, relative_offset)| {
+                build_save_dword_candidate(
+                    bytes,
+                    payload_offset,
+                    &format!("economic_tuning_lane_{lane_index}"),
+                    *relative_offset,
+                )
+            })
+            .collect::<Option<Vec<_>>>()?;
+        return Some(SmpSaveWorldEconomicTuningProbe {
+            profile_family: profile.profile_family.clone(),
+            source_kind: "save-direct-world-block".to_string(),
+            semantic_family: "scenario-save-world-economic-tuning".to_string(),
+            chunk_tag_offset,
+            payload_offset,
+            payload_len: RT3_SAVE_WORLD_BLOCK_LEN,
+            payload_len_hex: format!("0x{:x}", RT3_SAVE_WORLD_BLOCK_LEN),
+            mirror_lane,
+            tuning_lanes,
+            evidence: vec![
+                format!(
+                    "chunk tag 0x32c8 at 0x{chunk_tag_offset:x} matches the fixed [world+0x04] save block"
+                ),
+                format!(
+                    "next chunk tag 0x32c9 appears at 0x{next_chunk_tag_offset:x}, matching the documented 0x4f2c payload span"
+                ),
+                format!(
+                    "mirror lane uses payload +0x{:x} ([world+0x0bde])",
+                    RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_MIRROR_RELATIVE_OFFSET
+                ),
+                format!(
+                    "primary tuning lanes use payload offsets {} matching the documented [world+0x0be2..+0x0bf6] float block",
+                    RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_PRIMARY_RELATIVE_OFFSETS
+                        .iter()
+                        .map(|offset| format!("0x{offset:x}"))
+                        .collect::<Vec<_>>()
+                        .join(", ")
+                ),
+                "Current atlas evidence keeps this fixed six-float world tuning band separate from the issue-0x37 investor-confidence lane."
+                    .to_string(),
+            ],
+        });
+    }
+
+    None
+}
+
 fn parse_save_company_collection_header_probe(
     bytes: &[u8],
     file_extension_hint: Option<&str>,
@@ -14567,6 +14766,52 @@ mod tests {
         assert_eq!(probe.chairman_role_gate_bytes[..4], [2, 1, 0, 2]);
     }
 
+    #[test]
+    fn parses_save_world_economic_tuning_probe_from_fixed_world_block() {
+        let mut bytes = vec![0u8; 0x8000];
+        let chunk_tag_offset = 0x3ceusize;
+        let payload_offset = chunk_tag_offset + 4;
+        bytes[chunk_tag_offset..chunk_tag_offset + 4]
+            .copy_from_slice(&RT3_SAVE_WORLD_BLOCK_CHUNK_TAG.to_le_bytes());
+        bytes[payload_offset + RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_MIRROR_RELATIVE_OFFSET
+            ..payload_offset + RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_MIRROR_RELATIVE_OFFSET + 4]
+            .copy_from_slice(&1.5f32.to_bits().to_le_bytes());
+        for (lane_index, relative_offset) in
+            RT3_SAVE_WORLD_BLOCK_ECONOMIC_TUNING_PRIMARY_RELATIVE_OFFSETS
+                .iter()
+                .copied()
+                .enumerate()
+        {
+            let value = (lane_index as f32) + 10.25f32;
+            bytes[payload_offset + relative_offset..payload_offset + relative_offset + 4]
+                .copy_from_slice(&value.to_bits().to_le_bytes());
+        }
+        let next_chunk_offset = payload_offset + RT3_SAVE_WORLD_BLOCK_LEN;
+        bytes[next_chunk_offset..next_chunk_offset + 4]
+            .copy_from_slice(&RT3_SAVE_WORLD_BLOCK_NEXT_CHUNK_TAG.to_le_bytes());
+
+        let probe = parse_save_world_economic_tuning_probe(
+            &bytes,
+            Some("gms"),
+            Some(&SmpContainerProfile {
+                profile_family: "rt3-105-save-container-v1".to_string(),
+                profile_evidence: vec![],
+                is_known_profile: true,
+            }),
+        )
+        .expect("world economic tuning probe should parse");
+
+        assert_eq!(probe.chunk_tag_offset, chunk_tag_offset);
+        assert_eq!(probe.payload_offset, payload_offset);
+        assert_eq!(probe.mirror_lane.relative_offset_hex, "0xbda");
+        assert_eq!(probe.mirror_lane.value_f32, 1.5);
+        assert_eq!(probe.tuning_lanes.len(), 6);
+        assert_eq!(probe.tuning_lanes[0].relative_offset_hex, "0xbde");
+        assert_eq!(probe.tuning_lanes[0].value_f32, 10.25);
+        assert_eq!(probe.tuning_lanes[5].relative_offset_hex, "0xbf2");
+        assert_eq!(probe.tuning_lanes[5].value_f32, 15.25);
+    }
+
     #[test]
     fn loads_selection_only_company_and_chairman_context_from_save_world_probe() {
         let mut report = inspect_smp_bytes(&[]);
@@ -14974,13 +15219,14 @@ mod tests {
             .copy_from_slice(&0x0000520au32.to_le_bytes());
         bytes[close_tag_offset..close_tag_offset + 4].copy_from_slice(&0x0000520bu32.to_le_bytes());
 
-        for (index, (name, linked, cash, cache0, cache1, holdings)) in [
+        for (index, (name, linked, cash, cache0, cache1, cache4, holdings)) in [
             (
                 "Collis Huntington",
                 1u32,
                 -107644.0f64,
                 252508.0f64,
                 0.0f64,
+                0.0f64,
                 vec![(1u32, 6000u32)],
             ),
             (
@@ -14989,6 +15235,7 @@ mod tests {
                 -382718.0f64,
                 -283562.0f64,
                 822000.0f64,
+                1_392_000.0f64,
                 vec![(2u32, 9000u32)],
             ),
         ]
@@ -15014,6 +15261,8 @@ mod tests {
             bytes[record_offset + SAVE_CHAIRMAN_RECORD_CACHE_1_OFFSET
                 ..record_offset + SAVE_CHAIRMAN_RECORD_CACHE_1_OFFSET + 8]
                 .copy_from_slice(&cache1.to_le_bytes());
+            bytes[record_offset + 0x211..record_offset + 0x211 + 8]
+                .copy_from_slice(&cache4.to_le_bytes());
             for (company_id, units) in holdings {
                 let slot_offset = record_offset
                     + SAVE_CHAIRMAN_RECORD_HOLDINGS_BASE_OFFSET
@@ -15089,9 +15338,11 @@ mod tests {
         assert_eq!(table.entries[0].company_holdings.get(&1), Some(&6000));
         assert_eq!(table.entries[0].current_cash, -107644);
         assert_eq!(table.entries[0].holdings_value_total, 252508);
+        assert_eq!(table.entries[0].purchasing_power_total, 144864);
         assert_eq!(table.entries[1].profile_id, 2);
         assert_eq!(table.entries[1].company_holdings.get(&2), Some(&9000));
         assert_eq!(table.entries[1].holdings_value_total, 822000);
+        assert_eq!(table.entries[1].purchasing_power_total, 1_009_282);
     }
 
     #[test]
@@ -15149,6 +15400,55 @@ mod tests {
         assert_eq!(qword.value_f64, -2458.0);
     }
 
+    #[test]
+    fn derives_chairman_holdings_share_price_total_from_grounded_company_prices() {
+        let holdings_by_company =
+            BTreeMap::from([(2u32, 19_000u32), (4u32, 1_000u32), (6u32, 2_000u32)]);
+        let company_share_prices = BTreeMap::from([(2u32, 66i64), (4u32, 69i64), (6u32, 27i64)]);
+
+        let total =
+            derive_chairman_holdings_share_price_total(&holdings_by_company, &company_share_prices)
+                .expect("derived holdings total should compute");
+
+        assert_eq!(total, 1_377_000);
+    }
+
+    #[test]
+    fn derives_chairman_cached_purchasing_power_from_strongest_nonnegative_cache() {
+        let cached_scalar_candidates = vec![
+            SmpSaveScalarCandidate {
+                relative_offset: 0x1e9,
+                relative_offset_hex: "0x1e9".to_string(),
+                raw_u64: (-343_508.0f64).to_bits(),
+                raw_u64_hex: format!("0x{:016x}", (-343_508.0f64).to_bits()),
+                value_i64: round_f64_to_i64(-343_508.0).expect("i64"),
+                value_f64: -343_508.0,
+            },
+            SmpSaveScalarCandidate {
+                relative_offset: 0x201,
+                relative_offset_hex: "0x201".to_string(),
+                raw_u64: 1_386_000.0f64.to_bits(),
+                raw_u64_hex: format!("0x{:016x}", 1_386_000.0f64.to_bits()),
+                value_i64: round_f64_to_i64(1_386_000.0).expect("i64"),
+                value_f64: 1_386_000.0,
+            },
+            SmpSaveScalarCandidate {
+                relative_offset: 0x211,
+                relative_offset_hex: "0x211".to_string(),
+                raw_u64: 1_392_000.0f64.to_bits(),
+                raw_u64_hex: format!("0x{:016x}", 1_392_000.0f64.to_bits()),
+                value_i64: round_f64_to_i64(1_392_000.0).expect("i64"),
+                value_f64: 1_392_000.0,
+            },
+        ];
+
+        let total =
+            derive_chairman_cached_purchasing_power_total(-463_436, &cached_scalar_candidates)
+                .expect("derived purchasing power should compute");
+
+        assert_eq!(total, 928_564);
+    }
+
     #[test]
     fn classifies_rt3_105_post_span_bridge_variants() {
         let base_trailer = SmpRuntimeTrailerBlock {

docs/README.md

@@ -100,12 +100,15 @@ The highest-value next passes are now:
   directly from save-side tagged record families, while the fixed save-side `0x32c8` world block
   still provides selected company/chairman ids plus the grounded campaign-override and
   chairman-slot / role-gate analysis bytes; the current raw-save frontier is narrower now:
-  company/chairman identity, active flags, links, chairman cash, chairman holdings, company debt,
+  company/chairman identity, active flags, links, chairman cash, chairman holdings, chairman
-  company track-laying capacity, and collection counts are grounded, while broader company
+  purchasing power, company debt, company track-laying capacity, and collection counts are
+  grounded, while broader company
   finance/governance scalar lanes plus controller-kind reconstruction still remain conservative
   defaults until their raw offsets are pinned more strongly; the offline analysis command
   `runtime inspect-save-company-chairman <save.gms>` now dumps those remaining raw record
   candidates directly from the rehosted parser, including fixed-world chairman slot / role-gate
+  context, the fixed-world six-float economic tuning band, derived holdings-at-share-price and
+  cached purchasing-power totals,
   context, company dword candidate windows, and richer chairman qword cache views
 - a checked-in `EventEffects` export now exists at
   `artifacts/exports/rt3-1.06/event-effects-table.json`, and a checked-in semantic closure layer

docs/runtime-rehost-plan.md

@@ -64,11 +64,17 @@ Implemented today:
   chairman slot / role-gate analysis bytes, while the tagged company and chairman/profile
   collections now provide save-native roster entries and `observed_entry_count`; raw company debt
   from the bond table and raw company track-laying capacity from the record tail are grounded too,
+  and chairman purchasing power now reuses the strongest nonnegative cached qword total from the
+  `[profile+0x1e9..]` band plus current cash instead of collapsing to plain net worth;
+  the same fixed world payload now exposes the six-float economic tuning band
+  `[world+0x0be2..+0x0bf6]` through save inspection too, but current atlas evidence still keeps
+  that editor-tuning family separate from the company-governance issue lanes;
   and `runtime inspect-save-company-chairman <save.gms>` now exposes the remaining raw
   company/chairman scalar candidates directly from the rehosted parser, including fixed-world
-  chairman slot / role-gate context, company dword candidate windows, and richer chairman qword
+  chairman slot / role-gate context, company dword candidate windows, richer chairman qword
-  cache views; the remaining raw-save boundary is company-finance/governance scalar depth plus
+  cache views, and derived holdings-at-share-price / cached purchasing-power comparisons; the
-  controller-kind closure, not roster absence
+  remaining raw-save boundary is company-finance/governance scalar depth plus controller-kind
+  closure, not roster absence
 - a checked-in `EventEffects` export now exists too at
   `artifacts/exports/rt3-1.06/event-effects-table.json`, and a checked-in semantic closure layer
   now exists at `artifacts/exports/rt3-1.06/event-effects-semantic-catalog.json`