diff --git a/docs/ota_protocol.md b/docs/ota_protocol.md
index 0bf099930..c8e3400c0 100644
--- a/docs/ota_protocol.md
+++ b/docs/ota_protocol.md
@@ -864,8 +864,21 @@ class MotaSource {
 };
 ```
 
-To serve an external mota the node reads its manifest-minus-leaves + `leaves[]` into RAM (<=4 KiB for <=1024
-blocks) and streams payload blocks from the source on demand; proofs are generated from the read leaves.
+Legacy source paths retain the manifest-minus-leaves and four bytes per source
+block, bounded by `OTA_PROOFGEN_SCRATCH`, then stream payload blocks on demand.
+Non-PSRAM ESP32 Full instead retains roots of 32-leaf groups and rereads the
+selected group. Its complete workspace is bounded to 1,536 bytes while retaining
+4,096 blocks and byte-identical proofs. Partial groups use the same odd-node
+promotion as the full tree. Receive pipelines, capture, serving and wire formats
+remain unchanged; larger custom leaf limits retain the legacy path.
+
+With `OTA_BOUNDED_SOURCE_PROOFS=1`, optional `read_quantum()` and
+`read_metadata()` methods bound each metadata step. `SerialMotaSource` uses the
+current negotiated single-response capacity and rejects a chunk that no longer
+fits after a capacity change. Proof preparation yields between chunks, and
+queued jobs retain their buffers across radio backpressure. See the
+[V3 Full qualification](test-results/heltec_v3_full_memory_2026-10-19.md) for
+allocation bounds and regression coverage.
 
 ### 10.2 The `mota-seeder` transport (`MotaSeederProto.h`)
 
diff --git a/docs/research/companion_contact_cache.md b/docs/research/companion_contact_cache.md
index 117b233ce..fbf8bddba 100644
--- a/docs/research/companion_contact_cache.md
+++ b/docs/research/companion_contact_cache.md
@@ -214,9 +214,28 @@ partition table. Subsequent WiFi updates must fit the new slots. An
 application-only update from the ordinary single-slot Full layout cannot
 change that layout or enable WiFi OTA.
 
+## Shared contact index storage
+
+Companion and terminal-chat builds share compact contact indexes in
+`BaseChatMesh`. Tables with at most 65,535 total slots use 16-bit sort and
+matching-result entries; larger configurations retain the original `int` type.
+Contact limits, PSRAM allocation fallback and saved/wire formats are unchanged.
+
+On the existing 32-bit platforms, a static 350-contact table saves 764 bytes
+from these arrays; a static 100-contact table saves 264 bytes. A 350-contact
+PSRAM configuration saves 96 internal bytes and 716 PSRAM bytes. Cached nRF52
+records also shrink from 96 to 92 bytes by moving runtime storage bookkeeping
+into an alignment gap. The matched RAK4631 Full build saves 2,200 static RAM
+bytes in total. These figures do not describe infrastructure ACL tables.
+
+See the [2026-10-19 qualification report](../test-results/contact_memory_2026-10-19.md)
+for source-bound builds, tests and remaining board-specific memory limits.
+
 ## Regression checks
 
 ```sh
+python3 -B test/test_contact_indices.py
+python3 -B test/test_companion_contact_lifetime.py
 python3 -B test/test_contact_cache.py
 python3 -B test/test_companion_uncached_storage.py
 python3 -B test/test_companion_contact_partial_tail.py
diff --git a/docs/research/firmware_memory_budget.md b/docs/research/firmware_memory_budget.md
index 942fde3f9..269204a90 100644
--- a/docs/research/firmware_memory_budget.md
+++ b/docs/research/firmware_memory_budget.md
@@ -231,7 +231,12 @@ rate-window counters nor struct padding can make different rules share a slot.
 OTA leaf capacity remains controlled by `OTA_PROOFGEN_SCRATCH`, independently
 of output-buffer size. The maximum source buffers are 4 KiB plus one block on
 ordinary nRF52, 8 KiB plus one block with SD storage, and 16 KiB plus one block
-on ESP32. Generic folder sources need no output allocation for raw DATA or
+on legacy ESP32 paths. Non-PSRAM ESP32 Full uses grouped source proofs instead:
+the complete workspace is bounded to 1,536 bytes, while retaining the same
+4,096-block source limit. The check still adds one output block and allocation
+metadata; safety reserves and stacks are unchanged. PSRAM and other platforms
+retain the legacy policy. Explicit larger custom leaf limits also keep the
+legacy implementation. Generic folder sources need no output allocation for raw DATA or
 proofs; own-image raw serving retains its caller-owned compatibility buffer.
 Its nRF52 allowance remains in the budget even when the device encoder is off.
 Queued DATA, PROOF and MANIFEST responses pin their buffers through radio
@@ -812,3 +817,46 @@ images fit. These results qualify linked capacity and host behavior, not
 physical USB/RF/MQTT integration, board boot/sleep or a sustained-load soak.
 The Mini Repeater remains cable-only (`--allow-no-ota`); no hardware was
 flashed, no release was published and existing outputs were not overwritten.
+
+### Shared contact RAM and RAK4631 Full recheck, 2026-10-19 UTC
+
+Companion and `simple_secure_chat` contact sort/match indexes now use `uint16_t`
+when the complete table has at most 65,535 slots; larger configurations retain
+`int`. Static 350-contact targets save 764 internal bytes; PSRAM targets save
+96 internal and 716 external bytes; static 100-contact targets save 264 internal
+bytes. Cached nRF52 record placement also saves four bytes per runtime contact.
+Capacities, serialization, queues, stacks, features and fallback behavior remain.
+
+At `aed4c22e5`, matched against `31e693ec2`, RAK4631 Full saves 2,200 static RAM
+bytes and 488 actual DFU application bytes. Its application is 712,112 of 712,704
+bytes (592 free); modeled RAM admission margin rises from 4,516 to 6,716. CRC
+sharing and Reader packing preserve formats/text; Full features and existing SD
+support remain enabled. These are linked/build capacities, not running-heap or
+physical storage measurements.
+
+Five final-source canonical packages pass across nRF52, ESP32 PSRAM, RP2040 and
+STM32. RAK3x72 USB has four actual BIN bytes free, requiring unchanged hard gates.
+At that revision, V3 Full fails RAM admission on both baseline and final source; its
+100-contact wrapper gains 264 bytes, reducing the deficit from 21,288 to 21,024.
+The direct 350-contact V3 terminal default build passes separately; it is not a
+canonical Full or release-version/preset package. No hardware was flashed.
+See the [qualification report](../test-results/contact_memory_2026-10-19.md) and
+its source-bound artifacts, software coverage and limits.
+
+### Heltec V3 Full bounded-source repair, 2026-10-19 UTC
+
+At `eb9259f2a`, canonical V3 Full passes with 189,616 internal bytes available
+against 183,584 required: 6,032 bytes of modeled margin. The pinned NimBLE
+adapter preserves 15 saved phones and 30 CCCDs. Existing Bluedroid pairings need
+one-time re-pairing. Its 100 contacts, 40 channels, 256 offline frames, MQTT slot,
+Full features and stack sizes remain unchanged.
+
+Grouped source proofs retain the same 4,096-block capacity with a lazy workspace
+of 1,004 bytes, statically bounded to 1,536. The guard replaces only the old
+16,384-byte leaf allocation with this bound; the output block, metadata,
+transient margin and all other allowances remain additive. Legacy/PSRAM paths
+and larger custom leaf limits retain the existing policy.
+
+The clean V3 package and constrained RAK regressions pass; physical V3 testing
+still awaits USB attachment. See the [V3 qualification report](../test-results/heltec_v3_full_memory_2026-10-19.md)
+for artifact hashes, tests, upgrade behavior and hardware limits.
diff --git a/docs/test-results/contact_memory_2026-10-19.json b/docs/test-results/contact_memory_2026-10-19.json
new file mode 100644
index 000000000..975c5f365
--- /dev/null
+++ b/docs/test-results/contact_memory_2026-10-19.json
@@ -0,0 +1,414 @@
+{
+  "schema_version": 1,
+  "date_utc": "2026-10-19",
+  "source_commit": "aed4c22e51201f0ee3586e26e1007194a74b015d",
+  "baseline_source_commit": "31e693ec209109a930dcf8aeef89dacbe9116a63",
+  "hardware_flashed": false,
+  "release_published": false,
+  "platformio_single_process": true,
+  "final_matrix_complete": true,
+  "all_final_matrix_targets_passed": false,
+  "packages": [
+    {
+      "requested_target": "RAK_4631_companion_radio_full",
+      "passed": true,
+      "exit_code": 0,
+      "packaged_target": "RAK_4631_companion_radio_full",
+      "build_profile": "full",
+      "pio_environment": "RAK_4631_companion_radio_full",
+      "elf_sha256": "f002455df52a9cdf4278461685eaee3082cc14752f741428f6dfe2dcdc2bb2a7",
+      "all_memory_bound_file_hashes_match": true,
+      "memory_manifest_sha256": "073bd0eca6c9b233fcb09080991850b61806fddea3a0af31c52b0feb8bed9762",
+      "files": {
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.uf2": "31d92e0c48378932ec1465bd5542ca696dcf133a9f6555fd9d513691e1fafec0",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.zip": "d99d904430de75dd5e507a530267d933b8f0bda762afe86cdb150209f4df4499",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.capabilities.json": "d74ca93392bad5ab7cdbe8e07d24a905dbb570cbea76063ad8d9ab34be9cc788",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.full",
+        "companion.meshtext.channel_text",
+        "ota.update.bluetooth",
+        "companion.temp_radio",
+        "companion.ota_cli",
+        "companion.usb",
+        "companion.bluetooth",
+        "companion.usb_logging",
+        "companion.usb_mota_source",
+        "companion.mota_sender",
+        "companion.dedicated_usb_logging",
+        "companion.ble_mota_source",
+        "logging.usb.packets",
+        "logging.usb.control"
+      ],
+      "capability_verification_count": 13,
+      "capability_verification_passed": true,
+      "ordinary_static_ram_bytes": 154084,
+      "static_sections": {
+        ".data": 1660,
+        ".bss": 152424
+      },
+      "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+      "available_internal_bytes": 81292,
+      "required_heap_bytes": 74576,
+      "ram_admission_margin_bytes": 6716,
+      "sd_fat_volume_and_files_reserve_bytes": 2048,
+      "application_bytes": 712112,
+      "application_sha256": "c2080afe8874c71eb9a5d1fb253fec06463cac8a774fc776ff46453abf2da420",
+      "application_source": "DFU application BIN extracted from ZIP",
+      "uf2_matches_DFU_application": true,
+      "uf2_blocks": 2782,
+      "initialized_ELF_flash_load_bytes_match": true,
+      "initialized_ELF_flash_load_bytes_compared": 712032,
+      "application_capacity_bytes": 712704,
+      "application_margin_bytes": 592
+    },
+    {
+      "requested_target": "RAK_3401_companion_radio_usb",
+      "passed": true,
+      "exit_code": 0,
+      "packaged_target": "RAK_3401_companion_radio_usb",
+      "build_profile": "auto",
+      "pio_environment": "RAK_3401_companion_radio_usb",
+      "elf_sha256": "0d4a8c90601fc50b4c44f6ee3f315cc2bdfb5b5365cec2efed9d09d54189b9e2",
+      "all_memory_bound_file_hashes_match": true,
+      "memory_manifest_sha256": "e22c31d59175cc10c4ecb4f8d04430a859d4e32b450d8f1cd50480f012fd690d",
+      "files": {
+        "RAK_3401_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.uf2": "94469781e5550ff41469a5bf80f6f4dba5fc5d2aa2f9f3e073834b06137ef3d0",
+        "RAK_3401_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.zip": "0709ee56d7f35ac1c9cfa8e8c997b5e2ebd5990c37d044de0e41c6e638f29587",
+        "RAK_3401_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.capabilities.json": "088d17a9b1de74a851c5d17807a95a27cb4622e24fa05751ff0ef753b21f5ba7",
+        "RAK_3401_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.auto",
+        "ota.update.bluetooth"
+      ],
+      "capability_verification_count": 1,
+      "capability_verification_passed": true,
+      "ordinary_static_ram_bytes": 136564,
+      "static_sections": {
+        ".data": 1536,
+        ".bss": 135028
+      },
+      "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+      "available_internal_bytes": 98812,
+      "required_heap_bytes": 47872,
+      "ram_admission_margin_bytes": 50940,
+      "sd_fat_volume_and_files_reserve_bytes": 0,
+      "application_bytes": 523864,
+      "application_sha256": "a7fa19297c0a9a7f34162fbf666c2a9275794e1ff15b68aa0159817fae7a3bc2",
+      "application_source": "DFU application BIN extracted from ZIP",
+      "uf2_matches_DFU_application": true,
+      "uf2_blocks": 2047,
+      "initialized_ELF_flash_load_bytes_match": true,
+      "initialized_ELF_flash_load_bytes_compared": 523864
+    },
+    {
+      "requested_target": "Heltec_v3_companion_radio_full",
+      "passed": false,
+      "exit_code": 1
+    },
+    {
+      "requested_target": "heltec_v4_2_v4_3_companion_radio_full_femon",
+      "passed": true,
+      "exit_code": 0,
+      "packaged_target": "heltec_v4_2_v4_3_companion_radio_full_femon",
+      "build_profile": "full",
+      "pio_environment": "heltec_v4_2_v4_3_companion_radio_full_femon",
+      "elf_sha256": "2c50274bdc350696299819962592032fab540e63f583f2909baf227f875e8219",
+      "all_memory_bound_file_hashes_match": true,
+      "memory_manifest_sha256": "6bdcb095bed1fd784169d3986df1ff4212e84ec94bc69c032a0d2581fc79591f",
+      "files": {
+        "heltec_v4_2_v4_3_companion_radio_full_femon-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.bin": "ba264695b5093c643f726d970ef7cbfb29207f86454de8f924220276d0d26d70",
+        "heltec_v4_2_v4_3_companion_radio_full_femon-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e-merged.bin": "f433d9275edb0b0ef470a2866f82ef948a87b7e328f2098f1e06876e8ef6641c",
+        "heltec_v4_2_v4_3_companion_radio_full_femon-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.capabilities.json": "08dcf0def4a66ebe628df3635cc2eb4f6e1eeea2b78abe550d1533e4601e2a26",
+        "heltec_v4_2_v4_3_companion_radio_full_femon-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.full",
+        "companion.meshtext.channel_text",
+        "companion.temp_radio",
+        "companion.ota_cli",
+        "companion.usb",
+        "companion.bluetooth",
+        "companion.usb_logging",
+        "companion.usb_mota_source",
+        "companion.mota_sender",
+        "companion.network_terminal",
+        "companion.wifi_ota_seeder",
+        "web.webconfig",
+        "web.unconfigured_setup_cutoff",
+        "companion.direct_mqtt",
+        "logging.usb.packets",
+        "logging.usb.control",
+        "companion.app_wifi.get_enabled",
+        "companion.app_wifi.set_enabled",
+        "companion.app_wifi.get_ssid",
+        "companion.app_wifi.set_ssid",
+        "companion.app_wifi.get_password",
+        "companion.app_wifi.set_password",
+        "companion.app_wifi.get_status",
+        "companion.app_wifi.get_ip",
+        "ota.update.wifi"
+      ],
+      "capability_verification_count": 24,
+      "capability_verification_passed": true,
+      "ordinary_static_ram_bytes": null,
+      "static_sections": {},
+      "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+      "available_internal_bytes": 228872,
+      "required_heap_bytes": 194336,
+      "ram_admission_margin_bytes": 34536,
+      "sd_fat_volume_and_files_reserve_bytes": 0,
+      "application_bytes": 2558856,
+      "application_sha256": "ba264695b5093c643f726d970ef7cbfb29207f86454de8f924220276d0d26d70",
+      "application_source": "application BIN"
+    },
+    {
+      "requested_target": "Xiao_rp2040_companion_radio_usb",
+      "passed": true,
+      "exit_code": 0,
+      "packaged_target": "Xiao_rp2040_companion_radio_usb",
+      "build_profile": "auto",
+      "pio_environment": "Xiao_rp2040_companion_radio_usb",
+      "elf_sha256": "832133d6070f4b1b86ac6a9cbd691b5004025e19f7d853ca0cab2d0755284def",
+      "all_memory_bound_file_hashes_match": true,
+      "memory_manifest_sha256": "ecd592a61157de92ceb547984baf34f7a55f1fb8b218e6fece487f4ee4897f08",
+      "files": {
+        "Xiao_rp2040_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.bin": "757ccb5adb387dab0fccca1793ed70e0713c8ff13e5801763c8a9250f102d806",
+        "Xiao_rp2040_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.uf2": "8d9386975f8725f2f7bbe6fb1e9a5f81dff84134c710272e95759bd7872ac56e",
+        "Xiao_rp2040_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.capabilities.json": "f182d520112f6667afdb45eb64197aa025df44b567dac8e370c6892de2858b34",
+        "Xiao_rp2040_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.auto"
+      ],
+      "capability_verification_count": 0,
+      "capability_verification_passed": true,
+      "ordinary_static_ram_bytes": 100168,
+      "static_sections": {
+        ".data": 5372,
+        ".bss": 94796
+      },
+      "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+      "available_internal_bytes": 161748,
+      "required_heap_bytes": 17408,
+      "ram_admission_margin_bytes": 144340,
+      "sd_fat_volume_and_files_reserve_bytes": 0,
+      "application_bytes": 472204,
+      "application_sha256": "757ccb5adb387dab0fccca1793ed70e0713c8ff13e5801763c8a9250f102d806",
+      "application_source": "application BIN"
+    },
+    {
+      "requested_target": "RAK_3x72_companion_radio_usb",
+      "passed": true,
+      "exit_code": 0,
+      "packaged_target": "RAK_3x72_companion_radio_usb",
+      "build_profile": "auto",
+      "pio_environment": "RAK_3x72_companion_radio_usb",
+      "elf_sha256": "257b0e46be99095b1e9425bdb581b4639e5ee4f126b524ac997c4ffe123865ac",
+      "all_memory_bound_file_hashes_match": true,
+      "memory_manifest_sha256": "19c042cf40b21a068dc83a7e3177c2068167379d2f9f9c1a1a431734491de0a3",
+      "files": {
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.bin": "3b45baa64a7a5a6bbcce18dc17db70c46afa4321e7fd4369fa47b45d53fa73d0",
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.hex": "bb8198b4e06fe0133e70db53eafc33bfe2acfcafabd26b75ddec76c214b0a861",
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-aed4c22e.capabilities.json": "5df1c74616a9fbcf4253dc5294c2367551b1f78ae19e391e7238aaa4e633edcc"
+      },
+      "capabilities": [
+        "profile.auto"
+      ],
+      "capability_verification_count": 0,
+      "capability_verification_passed": true,
+      "ordinary_static_ram_bytes": 39992,
+      "static_sections": {
+        ".data": 424,
+        ".bss": 39568
+      },
+      "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+      "available_internal_bytes": 24520,
+      "required_heap_bytes": 17408,
+      "ram_admission_margin_bytes": 7112,
+      "sd_fat_volume_and_files_reserve_bytes": 0,
+      "application_bytes": 229372,
+      "application_sha256": "3b45baa64a7a5a6bbcce18dc17db70c46afa4321e7fd4369fa47b45d53fa73d0",
+      "application_source": "application BIN",
+      "application_capacity_bytes": 229376,
+      "application_margin_bytes": 4
+    }
+  ],
+  "linked_checks": {
+    "crypto": {
+      "passed": true,
+      "elf_sha256": "f002455df52a9cdf4278461685eaee3082cc14752f741428f6dfe2dcdc2bb2a7",
+      "base_table_bytes": 960,
+      "reader_data_bytes": 38293,
+      "vectors": [
+        {
+          "rfc8032_vector": 1,
+          "keypair_stack_bytes": 1152,
+          "sign_stack_bytes": 1928
+        },
+        {
+          "rfc8032_vector": 2,
+          "keypair_stack_bytes": 1152,
+          "sign_stack_bytes": 1928
+        }
+      ],
+      "zero_initialized_path_cache_bytes": 5780,
+      "stack_limit_bytes": 2048,
+      "scope": "Crypto function frames only; excludes caller/ISR/task stacks and physical timing.",
+      "evidence_json_sha256": "8ba582cd89bd4d182d5f9e03c70aeeddfee337b401987debcf3f481ec7c59d4e"
+    },
+    "workspace": {
+      "passed": true,
+      "elf_sha256": "f002455df52a9cdf4278461685eaee3082cc14752f741428f6dfe2dcdc2bb2a7",
+      "queue_lifetimes": 4,
+      "workspace_address": "0x200212d4",
+      "protected_sd_auth_range": [
+        "0x20006008",
+        "0x20006050"
+      ],
+      "scope": "Linked ARM empty-queue OTA acquisition/release; no hardware qualification.",
+      "evidence_json_sha256": "658e56af82decc3648a99ef432f547577faeb7139f2bd34e74d6744fb0d8a21d"
+    },
+    "reader": {
+      "passed": true,
+      "elf_sha256": "f002455df52a9cdf4278461685eaee3082cc14752f741428f6dfe2dcdc2bb2a7",
+      "references_fully_reconstructed": 879,
+      "calls": 1091,
+      "canonical_bytes_checked": 95689,
+      "maximum_reply_verse_stack_bytes": 6016,
+      "caller_reserve_bytes": 1536,
+      "loop_stack_bytes": 8192,
+      "total_arm_instructions": 380103543,
+      "checker_sha256": "02d0eb4a553c9588c698ca5013c269fae16f863d864b1cac521a18fba065f1be",
+      "canonical_source_sha256": "916bf9d1feae0ad410d69f61e6c5f328ac6acba10651d751b5bb29719732c49e",
+      "partition_count": 4,
+      "disjoint_reference_coverage_verified": true,
+      "all_pages": true,
+      "evidence_json_sha256": "740aa99a7a514862f6e597efe56ebca47580416dae28db48016ca333d21d2fe8"
+    }
+  },
+  "adjacent_native_checks": {
+    "Reader_tests": 16,
+    "Beacon_tests": 19,
+    "radio_profile_matrix_scenarios": 32,
+    "Morse_tests": 7,
+    "persistent_format_tests": 16
+  },
+  "canonical_V3_Full_failure": {
+    "stage": "runtime RAM admission",
+    "available_internal_bytes": 177408,
+    "required_heap_bytes": 198432,
+    "shortfall_bytes": 21024,
+    "largest_internal_region_bytes": 144640,
+    "matched_baseline_control": "verified preexisting RAM admission failure",
+    "baseline_source_commit": "31e693ec209109a930dcf8aeef89dacbe9116a63",
+    "baseline_available_internal_bytes": 177144,
+    "baseline_required_heap_bytes": 198432,
+    "baseline_shortfall_bytes": 21288,
+    "available_improvement_bytes": 264,
+    "profile_contact_capacity": 100,
+    "final_failed_ELF_hash": null,
+    "failed_ELF_evidence_scope": "final failed ELF was cleaned by later build; current failure is log-bound only",
+    "direct_terminal_control": "PASS; direct default build, not a canonical Full package",
+    "baseline_build_log_sha256": "f5f95ec53b9e472cdd5d46f5ec45d61de68e5eace3c2ead53dec7209e5d0f7c8",
+    "final_build_log_sha256": "732580a8d70c65b73023aec736a95e961da2451fc7ac9a38efeba9a091027dc4"
+  },
+  "focused_contact_checks": {
+    "unittest_methods_passed": 26,
+    "method_breakdown": {
+      "cache_and_persistence_harness": 3,
+      "persistence_contract": 11,
+      "stream_contract": 7,
+      "index_and_layout": 2,
+      "lifetime_matrix": 1,
+      "uncached_storage_RP2040_STM32": 2
+    },
+    "ASan_UBSan_runtime_configurations": 24,
+    "runtime_configuration_breakdown": {
+      "cache": 3,
+      "index": 11,
+      "lifetime": 8,
+      "uncached": 2
+    },
+    "actual_ContactInfo_compile_only_layouts": 8,
+    "lifetime_assertions": 284,
+    "contact_sources_unchanged_since": "b0f14161506e2a5f6acfbb4b0b1723e7bd7689c3",
+    "evidence_scope": "completed tool transcript; no standalone contact log retained"
+  },
+  "limits": [
+    "Software/build/linked-ARM qualification only; no board flashed",
+    "RAM admission and static section totals are not running free heap or physical high-water",
+    "Physical SD/storage, contact/client behavior, PSRAM pressure, power and radio operation untested"
+  ],
+  "historical_failures": [
+    "Intermediate b0f141615 small STM32 build failed size admission; retained separately from final-source matrix",
+    "Legacy Heltec_v3_companion_radio_ble has identical five WiFiSetupPortal/WiFiOtaSeeder unresolved symbols on matched baseline and intermediate revision",
+    "Initial V4 invocation rejected unsupported --full-exact argument before target compilation"
+  ],
+  "baseline_RAK4631_Full": {
+    "packaged_target": "RAK_4631_companion_radio_full",
+    "build_profile": "full",
+    "pio_environment": "RAK_4631_companion_radio_full",
+    "elf_sha256": "4623af75c924a830415c0a5fd186569b4bbff35a9ce1084438eafe145282058e",
+    "all_memory_bound_file_hashes_match": true,
+    "memory_manifest_sha256": "fc1dad5cab6a7deae4ea4042b26dc20231d82710e627fa6e33aef7efecf36c41",
+    "files": {
+      "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-31e693ec.uf2": "6039f7fe532f121100c1734c9f292ec5f7d7c3ead50b06e7e283fe93569f3fff",
+      "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-31e693ec.zip": "ef641d49dc91db61f0a49912f191f6d81c2887a69950fa66a612f81b31f0e142",
+      "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-31e693ec.capabilities.json": "91711e0da1a8f3ba4b99c24749c1ac78f0862534f436233ff32c867ccbeb9cc9",
+      "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-31e693ec.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+    },
+    "capabilities": [
+      "profile.full",
+      "companion.meshtext.channel_text",
+      "ota.update.bluetooth",
+      "companion.temp_radio",
+      "companion.ota_cli",
+      "companion.usb",
+      "companion.bluetooth",
+      "companion.usb_logging",
+      "companion.usb_mota_source",
+      "companion.mota_sender",
+      "companion.dedicated_usb_logging",
+      "companion.ble_mota_source",
+      "logging.usb.packets",
+      "logging.usb.control"
+    ],
+    "capability_verification_count": 13,
+    "capability_verification_passed": true,
+    "ordinary_static_ram_bytes": 156284,
+    "static_sections": {
+      ".data": 1660,
+      ".bss": 154624
+    },
+    "static_sections_scope": "ELF .data plus ordinary .bss only; excludes separately named/reserved arenas; null when these exact sections are absent",
+    "available_internal_bytes": 79092,
+    "required_heap_bytes": 74576,
+    "ram_admission_margin_bytes": 4516,
+    "sd_fat_volume_and_files_reserve_bytes": 2048,
+    "application_bytes": 712600,
+    "application_sha256": "520cf40ec5ada891d3fe8081b23546ce777c712383f0479292bb8fac0017d4d7",
+    "application_source": "DFU application BIN extracted from ZIP",
+    "uf2_matches_DFU_application": true,
+    "uf2_blocks": 2784,
+    "initialized_ELF_flash_load_bytes_match": true,
+    "initialized_ELF_flash_load_bytes_compared": 712520,
+    "application_capacity_bytes": 712704,
+    "application_margin_bytes": 104
+  },
+  "direct_terminal_build": {
+    "target": "Heltec_v3_terminal_chat",
+    "source_commit": "aed4c22e51201f0ee3586e26e1007194a74b015d",
+    "passed": true,
+    "scope": "direct PlatformIO default environment; not a firmware-picker Full or version/preset-qualified release package",
+    "contact_capacity": 350,
+    "elf_sha256": "1a193ae1bee829d0bf7d140310b8487d2a4671f0c85715d16cfb764850e06cb6",
+    "memory_manifest_sha256": "a74079788410d8cdf11e686b62f8aee80537a9743cd0590bf4caf069ab7d038d",
+    "available_internal_bytes": 263800,
+    "required_heap_bytes": 77856,
+    "ram_admission_margin_bytes": 185944,
+    "build_log_sha256": "31d410458e6e6cd87bce96019e1ce655ab698eeb5e5d720987461c7be07f3fdf"
+  }
+}
diff --git a/docs/test-results/contact_memory_2026-10-19.md b/docs/test-results/contact_memory_2026-10-19.md
new file mode 100644
index 000000000..d946cee71
--- /dev/null
+++ b/docs/test-results/contact_memory_2026-10-19.md
@@ -0,0 +1,178 @@
+<!-- meshcore-hosted-doc-link:start -->
+<p class="meshcore-hosted-doc-link"><a href="https://mikecarper.github.io/MeshCore/test-results/contact_memory_2026-10-19/">View this page on MeshCore Docs</a>.</p>
+<!-- meshcore-hosted-doc-link:end -->
+
+# Contact RAM savings and RAK4631 Full capacity, 2026-10-19
+
+Shared contact indexes save RAM across Companion profiles and terminal chat.
+RAK4631 Full additionally saves **2,200 static RAM bytes and 488 application
+bytes**, preserving its existing features and SD support. Five canonical
+packages and a direct terminal build pass. Heltec V3 Full failed its preexisting
+RAM-admission limit at this revision; the subsequent
+[V3 Full repair](heltec_v3_full_memory_2026-10-19.md) is measured separately.
+**No hardware was flashed for this contact-memory campaign.**
+
+Baseline source: [`31e693ec209109a930dcf8aeef89dacbe9116a63`](https://github.com/mikecarper/MeshCore/commit/31e693ec209109a930dcf8aeef89dacbe9116a63).
+Final source: [`aed4c22e51201f0ee3586e26e1007194a74b015d`](https://github.com/mikecarper/MeshCore/commit/aed4c22e51201f0ee3586e26e1007194a74b015d).
+The [machine-readable results](contact_memory_2026-10-19.json) bind package,
+ELF, memory-manifest and linked-check hashes to these revisions.
+
+## Shared contact savings
+
+`BaseChatMesh` uses `uint16_t` sort/match indexes when the complete contact table
+has at most 65,535 slots; larger configurations keep `int`. API counts retain
+their existing types. All Companion profiles and `simple_secure_chat` share this
+implementation across nRF52, ESP32, RP2040 and STM32. Infrastructure client/ACL
+tables use different record types and are outside this contact-table change.
+
+| Existing configuration | Internal RAM saved by indexes | PSRAM saved by indexes |
+| --- | ---: | ---: |
+| Static 350-contact table | 764 bytes | None |
+| PSRAM 350-contact table with internal fallback | 96 bytes | 716 bytes |
+| Static 100-contact table | 264 bytes | None |
+
+These totals include eight anonymous slots and 24 match results. PSRAM retains
+its existing 24-slot internal fallback and allocation-failure behavior. Cached
+nRF52 `ContactInfo` records also shrink from 96 to 92 bytes by moving the
+runtime-only `storage_slot` field into an alignment gap; other record layouts
+retain their sizes. Field-based serialization, contact/channel capacities,
+features, queues and stack allocations remain unchanged.
+
+## RAK4631 Full comparison
+
+| Measurement | Baseline | Final | Improvement |
+| --- | ---: | ---: | ---: |
+| Actual application BIN extracted from DFU ZIP | 712,600 | 712,112 | 488 fewer |
+| Application-region capacity | 712,704 | 712,704 | Unchanged |
+| Actual flash margin | 104 | 592 | 488 more |
+| Ordinary static RAM (`.data` + `.bss`) | 156,284 | 154,084 | 2,200 fewer |
+| Linked heap capacity | 79,092 | 81,292 | 2,200 more |
+| Modeled heap requirement | 74,576 | 74,576 | Unchanged |
+| Modeled admission margin | 4,516 | 6,716 | 2,200 more |
+
+`.data` stays at 1,660 bytes; ordinary `.bss` falls from 154,624 to 152,424.
+Separately reserved linker arenas are excluded from this section sum. The
+measured reduction includes final object alignment. Linked capacities and
+admission models do not measure running free heap or physical stack high-water.
+
+Four duplicate CRC loops share the existing implementation without changing
+initial values, byte ranges or stored formats. Reader packing increases offline
+Zopfli iterations from 15 to 1,000 and selects 16-bit block offsets only when
+every block start fits. General 32-bit types/fallback, 4,096-byte blocks,
+scratch policy and all canonical text remain unchanged.
+
+| Reader flash data | Baseline | Final | Saving |
+| --- | ---: | ---: | ---: |
+| Compressed payload | 38,366 | 38,293 | 73 bytes |
+| Twenty-four block indexes | 288 | 192 | 96 bytes |
+| Payload plus index | 38,654 | 38,485 | 169 bytes |
+
+The complete image saves 488 bytes; Reader payload plus index accounts for 169.
+The Full marker and thirteen feature-verification entries are unchanged.
+Existing SD support, its 2,048-byte SD/FAT runtime reserve and protected
+authentication range remain intact. No physical SD operation was tested.
+
+## Source-bound artifacts
+
+| Artifact | SHA-256 |
+| --- | --- |
+| Baseline DFU application | `520cf40ec5ada891d3fe8081b23546ce777c712383f0479292bb8fac0017d4d7` |
+| Final DFU application | `c2080afe8874c71eb9a5d1fb253fec06463cac8a774fc776ff46453abf2da420` |
+| Baseline DFU ZIP | `ef641d49dc91db61f0a49912f191f6d81c2887a69950fa66a612f81b31f0e142` |
+| Final DFU ZIP | `d99d904430de75dd5e507a530267d933b8f0bda762afe86cdb150209f4df4499` |
+| Final ELF | `f002455df52a9cdf4278461685eaee3082cc14752f741428f6dfe2dcdc2bb2a7` |
+
+Every admitted package's memory-bound file hashes were recomputed. Nordic UF2
+payloads match the DFU applications, and initialized ELF flash-load bytes agree.
+The JSON records the individual hashes and actual packaged selectors/profiles.
+
+## Software verification
+
+Contact coverage totals **26 Python unittest methods**: three cache/persistence
+harness methods, eleven persistence-contract methods, seven stream-contract
+methods, two index/layout methods, one lifetime matrix, and two RP2040/STM32
+uncached-storage methods. They execute **24 ASan/UBSan C++ configurations**
+(three cache, eleven index, eight lifetime, two uncached) and separately compile
+eight actual cached/uncached record layouts across the four MCU families. The
+lifetime matrix checks 284 assertions. Index execution uses a small stand-in
+record; separate layout checks compile the real header. Contact code is
+unchanged since `b0f141615`; results are retained in the tool transcript, with
+no separate contact log claimed.
+
+Adjacent checks pass: 16 Reader tests, 19 Beacon tests, a radio-profile matrix
+with 32 scenarios, seven Morse-codec tests and sixteen persistent-format tests.
+These focused counts do not establish a complete hosted CI run.
+
+Final linked ARM checks all bind to the ELF above:
+
+- Crypto: both RFC8032 vectors pass; keypair/sign frames are 1,152/1,928 bytes,
+  within the existing 2,048-byte function-frame bound.
+- OTA workspace: four acquisition/release lifetimes pass, preserving protected
+  SD authentication range `0x20006008`–`0x20006050`.
+- Reader: four disjoint partitions reconstruct all 879 references and every
+  continuation page: 95,689 canonical bytes through 1,091 calls and 380,103,543
+  ARM instructions. Exact disjoint reference coverage is verified. Maximum
+  callee frame is 6,016 bytes; with the existing 1,536-byte caller reserve this
+  is 7,552 of the 8,192-byte loop-stack model. Canonical source SHA-256 remains
+  `916bf9d1feae0ad410d69f61e6c5f328ac6acba10651d751b5bb29719732c49e`.
+
+The partitioned campaign invokes the unchanged linked Reader checker with
+all-page reconstruction; partitioning is not an additional release gate.
+Equivalent complete reproduction against the matching ELF uses Unicorn 2.1.4:
+
+```sh
+python scripts/check_nrf52_companion_crypto.py path/to/firmware.elf
+python scripts/check_nrf52_companion_ota_workspace.py path/to/firmware.elf
+python scripts/check_nrf52_companion_reader.py path/to/firmware.elf --every-page
+```
+
+## Final-source build matrix
+
+Canonical packages used `v1.18.0.1-halo-keymind-cascade-dev`, radio preset
+`usa-cascade-fixed` and profile `cascade`; Full selections required OTA.
+PlatformIO commands ran one at a time. For example:
+
+```sh
+bash build.sh build-firmware RAK_4631_companion_radio_full --firmware-version v1.18.0.1-halo-keymind-cascade-dev --radio-preset usa-cascade-fixed --profile cascade --require-ota
+```
+
+| Requested target | Actual application bytes | Modeled RAM margin | Result |
+| --- | ---: | ---: | --- |
+| `RAK_4631_companion_radio_full` | 712,112 | 6,716 | PASS |
+| `RAK_3401_companion_radio_usb` | 523,864 | 50,940 | PASS |
+| `heltec_v4_2_v4_3_companion_radio_full_femon` | 2,558,856 | 34,536 | PASS, Full PSRAM profile |
+| `Xiao_rp2040_companion_radio_usb` | 472,204 | 144,340 | PASS |
+| `RAK_3x72_companion_radio_usb` | 229,372 | 7,112 | PASS; four actual flash bytes free |
+| `Heltec_v3_companion_radio_full` | No admitted package | -21,024 | Verified preexisting RAM-gate failure |
+
+Matched baseline V3 Full also fails: 177,144 available against 198,432 required
+(21,288 short), versus final 177,408 (21,024 short). This wrapper preserves 100
+contacts, gaining 264 bytes. The final failed ELF was cleaned by a later build;
+the failure is bound to its build log; that ELF hash is not recorded.
+
+The direct `pio run -e Heltec_v3_terminal_chat` default build passes with 350
+contacts: 263,800 available, 77,856 required and 185,944 margin. ELF SHA-256 is
+`1a193ae1bee829d0bf7d140310b8487d2a4671f0c85715d16cfb764850e06cb6`.
+This qualifies a no-PSRAM/shared-terminal compile path; it is not a Full package
+or a firmware-picker release-version/preset qualification.
+
+## Retained failures and limits
+
+Intermediate `b0f141615` failed the STM32 size check. Shared little-endian Morse
+serialization and an equivalent branchless CRC loop restore the packaged fit.
+STM32 static RAM
+falls from 40,256 to 39,992 bytes; baseline actual BIN was 229,284/229,376 bytes
+(92 free), although PlatformIO's section summary showed 444 free. Acceptance
+uses actual BIN/ELF extent. The final four-byte margin and RAK4631 Full's
+592-byte margin require the unchanged hard gates for subsequent versions.
+
+The separate legacy V3 BLE target has the same five unresolved WiFi setup/seeder
+symbols on matched baseline and intermediate source. Initial disk-quota failures
+and an unsupported V4 command flag remain separate failed attempts; successful
+retries establish the results above. No features, capacities or budgets were
+reduced to obtain these passes. There is no six-canonical-pass claim.
+
+These are software/build/linked-code results. No board was flashed. Physical
+contact/client operation, PSRAM pressure/fallback, storage persistence, SD/radio
+operation, power, timing and full-firmware ISR/SoftDevice stack high-water remain
+outside this qualification.
diff --git a/docs/test-results/heltec_v3_full_memory_2026-10-19.json b/docs/test-results/heltec_v3_full_memory_2026-10-19.json
new file mode 100644
index 000000000..400b5b5a3
--- /dev/null
+++ b/docs/test-results/heltec_v3_full_memory_2026-10-19.json
@@ -0,0 +1,284 @@
+{
+  "schema_version": 1,
+  "date_utc": "2026-10-19",
+  "source_commit": "eb9259f2a97113b1d482ca9610661fb24c1c8e98",
+  "baseline_source_commit": "31e693ec209109a930dcf8aeef89dacbe9116a63",
+  "all_final_builds_passed": true,
+  "single_process_platformio": true,
+  "hardware_validation": {
+    "performed": false,
+    "flashed": false,
+    "status": "Awaiting physical V3 USB attachment to the VM; no V3 enumerated during inventory."
+  },
+  "v3_capacity": {
+    "contacts": 100,
+    "channels": 40,
+    "offline_frames": 256,
+    "active_ble_sessions": 1,
+    "saved_phone_bonds": 15,
+    "cccd_records": 30,
+    "mqtt_runtime_slots": 1
+  },
+  "v3_proof_workspace": {
+    "maximum_source_blocks": 4096,
+    "actual_xtensa_bytes": 1004,
+    "reserved_bytes": 1536,
+    "output_block_bytes": 2048,
+    "allocation_metadata_bytes": 32,
+    "legacy_source_leaf_bytes": 16384,
+    "legacy_larger_custom_limits_retained": true
+  },
+  "v3_baseline_memory": {
+    "available_internal_bytes": 177144,
+    "required_heap_bytes": 198432,
+    "margin_bytes": -21288
+  },
+  "software_checks": {
+    "bounded_source_proofs": {
+      "python_tests": 3,
+      "exact_wire_proofs": 22240,
+      "sanitizers": [
+        "ASan",
+        "UBSan"
+      ]
+    },
+    "firmware_ram_policy": {
+      "python_tests": 47
+    },
+    "nimble_adapter_and_variant": {
+      "python_tests": 10,
+      "adapter_sanitizers": [
+        "ASan",
+        "UBSan"
+      ]
+    },
+    "legacy_ota_cold_buffers": {
+      "configurations": 4
+    },
+    "serial_deadlines": {
+      "python_tests": 2
+    },
+    "source_only_folder_resume": {
+      "python_tests": 2
+    }
+  },
+  "packages": [
+    {
+      "target": "Heltec_v3_companion_radio_full",
+      "passed": true,
+      "exit_code": 0,
+      "elapsed_seconds": 54.22,
+      "elf_sha256": "3a56805b2d0216026c3710e149db43dedb677684e47ad08ebfe748094c1de55b",
+      "available_internal_bytes": 189616,
+      "required_heap_bytes": 183584,
+      "margin_bytes": 6032,
+      "memory_manifest_sha256": "dc03ea7ba74caadaf5e5fe43f64affacf14481cdadbfd37ca241eb7bb47c1548",
+      "memory_bound_file_hashes_verified": true,
+      "files": {
+        "Heltec_v3_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.bin": "c4f276095626560abc4c6875216c147d2fae292bf5c514e5029ef7d03454d3ce",
+        "Heltec_v3_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2-merged.bin": "8ab56857805925666cf9c8638aa23851bea0d36f01a9f6ca270ad5776c2a0245",
+        "Heltec_v3_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.capabilities.json": "d03182ad9405a2cf692687de11cc686fdf3600725d2761db3198cd7236bdba4a",
+        "Heltec_v3_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.full",
+        "companion.meshtext.channel_text",
+        "companion.temp_radio",
+        "companion.ota_cli",
+        "companion.usb",
+        "companion.bluetooth",
+        "companion.usb_logging",
+        "companion.usb_mota_source",
+        "companion.mota_sender",
+        "companion.network_terminal",
+        "companion.wifi_ota_seeder",
+        "web.webconfig",
+        "web.unconfigured_setup_cutoff",
+        "companion.direct_mqtt",
+        "logging.usb.packets",
+        "logging.usb.control",
+        "companion.app_wifi.get_enabled",
+        "companion.app_wifi.set_enabled",
+        "companion.app_wifi.get_ssid",
+        "companion.app_wifi.set_ssid",
+        "companion.app_wifi.get_password",
+        "companion.app_wifi.set_password",
+        "companion.app_wifi.get_status",
+        "companion.app_wifi.get_ip",
+        "ota.update.wifi"
+      ],
+      "feature_checks": 24,
+      "capabilities_verified": true,
+      "existing_recipe_reductions": [
+        "companion.capacity limited to 100 contacts for runtime RAM; 256 queued frames and all Full transports retained"
+      ],
+      "components": {
+        "core_tasks_usb_filesystems": 24576,
+        "wireless_stacks": 81920,
+        "mqtt_startup_allowance": 24576,
+        "ota_source_scratch": 8192,
+        "browser_terminal_session": 2048,
+        "browser_terminal_scrollback": 4096,
+        "radio_packet_pool": 5120,
+        "ota_generic_source_buffers": 3616,
+        "display_pixels_and_driver": 2048,
+        "screen_objects_and_history": 8192,
+        "expanded_message_previews": 2816,
+        "allocation_and_transient_margin": 16384
+      },
+      "required_contiguous_bytes": 11008,
+      "largest_internal_region_bytes": 156848,
+      "application_bytes": 2114744,
+      "application_sha256": "c4f276095626560abc4c6875216c147d2fae292bf5c514e5029ef7d03454d3ce",
+      "application_capacity_bytes": 3342336,
+      "application_margin_bytes": 1227592
+    },
+    {
+      "target": "RAK_4631_companion_radio_full",
+      "passed": true,
+      "exit_code": 0,
+      "elapsed_seconds": 34.08,
+      "elf_sha256": "7f123f4c4a43200fd85fb889bb388b4f22318fd395eeafe64c014af14be3804e",
+      "available_internal_bytes": 81292,
+      "required_heap_bytes": 74576,
+      "margin_bytes": 6716,
+      "memory_manifest_sha256": "c58fdd1cf010ca8d7c5b0c33549f941482cb6ca11deb361e04c2d4770eaa4f22",
+      "memory_bound_file_hashes_verified": true,
+      "files": {
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.uf2": "b532062fec9d5fe53d490010fea26dfbad334e0ffb66a4f483def390763a31ef",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.zip": "dd58370fe7360df078b645813d633a31567780dfab02dbde5e0ec28e120b0018",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.capabilities.json": "a54fc3dc71fd31eb5ddfb8c4b7368fcec6446fe41729f05ef3408ca6be270e87",
+        "RAK_4631_companion_radio_full-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.meshtext-license.txt": "ba558609720fbff1481e236462eea2f9e08a73c1f3c2fd486ea4d9e1d0a6d58f"
+      },
+      "capabilities": [
+        "profile.full",
+        "companion.meshtext.channel_text",
+        "ota.update.bluetooth",
+        "companion.temp_radio",
+        "companion.ota_cli",
+        "companion.usb",
+        "companion.bluetooth",
+        "companion.usb_logging",
+        "companion.usb_mota_source",
+        "companion.mota_sender",
+        "companion.dedicated_usb_logging",
+        "companion.ble_mota_source",
+        "logging.usb.packets",
+        "logging.usb.control"
+      ],
+      "feature_checks": 13,
+      "capabilities_verified": true,
+      "existing_recipe_reductions": [
+        "nRF52 Full: 256 offline frames normally; 128 while mOTA borrows queue storage"
+      ],
+      "components": {
+        "loop_and_callback_stacks": 11264,
+        "core_usb_filesystems_sensors": 12288,
+        "sd_fat_volume_and_files": 2048,
+        "ota_target_name_lookup": 4112,
+        "bluetooth_worker_stacks": 5920,
+        "radio_packet_pool": 5120,
+        "ota_generic_source_buffers": 10272,
+        "ethernet_companion_worker": 4352,
+        "display_pixels_and_driver": 4096,
+        "screen_objects_and_history": 8192,
+        "expanded_message_previews": 2816,
+        "allocation_and_transient_margin": 4096
+      },
+      "required_contiguous_bytes": 11008,
+      "largest_internal_region_bytes": 81292,
+      "application_bytes": 712112,
+      "application_sha256": "2707606a9f4af071c9c4720465a7e7f17132292abc4af9eb468578d456480779",
+      "application_capacity_bytes": 712704,
+      "application_margin_bytes": 592
+    },
+    {
+      "target": "RAK_3x72_companion_radio_usb",
+      "passed": true,
+      "exit_code": 0,
+      "elapsed_seconds": 22.35,
+      "elf_sha256": "1e686c6ad520e84f2ede3f50037c5d1c4c8e4266c0e9fac605d53d67ee4bd593",
+      "available_internal_bytes": 24520,
+      "required_heap_bytes": 17408,
+      "margin_bytes": 7112,
+      "memory_manifest_sha256": "687267b1bd35019f9683b46fe52ea4c23001dc4ef1f2aa14f51a2e917a9885fc",
+      "memory_bound_file_hashes_verified": true,
+      "files": {
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.bin": "b2770a66e75534fb48d987d2cd1bc71ea178bd7e1e720ebf0d45788efeaa7621",
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.hex": "a583bc987801281c6c6eb5a4cb9a069e72fd4a5e7b5c3863d8df5f2b31abea58",
+        "RAK_3x72_companion_radio_usb-v1.18.0.1-halo-keymind-cascade-dev-eb9259f2.capabilities.json": "7977ab1c0bb8f7cb678ae675816dc3a12639d1b2e1d49d6f98bdac1b349bc86f"
+      },
+      "capabilities": [
+        "profile.auto"
+      ],
+      "feature_checks": 0,
+      "capabilities_verified": true,
+      "existing_recipe_reductions": [],
+      "components": {
+        "core_filesystems_sensors": 8192,
+        "radio_packet_pool": 5120,
+        "allocation_and_transient_margin": 4096
+      },
+      "required_contiguous_bytes": 5120,
+      "largest_internal_region_bytes": 24520,
+      "application_bytes": 229372,
+      "application_sha256": "b2770a66e75534fb48d987d2cd1bc71ea178bd7e1e720ebf0d45788efeaa7621",
+      "application_capacity_bytes": 229376,
+      "application_margin_bytes": 4
+    }
+  ],
+  "rak_linked_arm_checks": {
+    "crypto": {
+      "passed": true,
+      "elf_sha256": "7f123f4c4a43200fd85fb889bb388b4f22318fd395eeafe64c014af14be3804e",
+      "base_table_bytes": 960,
+      "reader_data_bytes": 38293,
+      "vectors": [
+        {
+          "rfc8032_vector": 1,
+          "keypair_stack_bytes": 1152,
+          "sign_stack_bytes": 1928
+        },
+        {
+          "rfc8032_vector": 2,
+          "keypair_stack_bytes": 1152,
+          "sign_stack_bytes": 1928
+        }
+      ],
+      "zero_initialized_path_cache_bytes": 5780,
+      "stack_limit_bytes": 2048,
+      "scope": "Crypto function frames only; excludes caller/ISR/task stacks and physical timing."
+    },
+    "workspace": {
+      "passed": true,
+      "elf_sha256": "7f123f4c4a43200fd85fb889bb388b4f22318fd395eeafe64c014af14be3804e",
+      "queue_lifetimes": 4,
+      "workspace_address": "0x200212d4",
+      "protected_sd_auth_range": [
+        "0x20006008",
+        "0x20006050"
+      ],
+      "scope": "Linked ARM empty-queue OTA acquisition/release; no hardware qualification."
+    },
+    "reader": {
+      "passed": true,
+      "elf_sha256": "7f123f4c4a43200fd85fb889bb388b4f22318fd395eeafe64c014af14be3804e",
+      "all_pages": true,
+      "references_fully_reconstructed": 879,
+      "disjoint_reference_coverage_verified": true,
+      "calls": 1091,
+      "canonical_bytes_checked": 95689,
+      "maximum_reply_verse_stack_bytes": 6016,
+      "caller_reserve_bytes": 1536,
+      "loop_stack_bytes": 8192,
+      "checker_sha256": "02d0eb4a553c9588c698ca5013c269fae16f863d864b1cac521a18fba065f1be",
+      "canonical_source_sha256": "916bf9d1feae0ad410d69f61e6c5f328ac6acba10651d751b5bb29719732c49e"
+    }
+  },
+  "scope": "Linked capacity and host/linked-code verification; physical V3 boot, transport/load and power-loss behavior are not qualified.",
+  "linked_ble_store_bytes": {
+    "ble_store_config_our_secs": 1320,
+    "ble_store_config_peer_secs": 1320,
+    "ble_store_config_cccds": 480
+  }
+}
diff --git a/docs/test-results/heltec_v3_full_memory_2026-10-19.md b/docs/test-results/heltec_v3_full_memory_2026-10-19.md
new file mode 100644
index 000000000..3717bc735
--- /dev/null
+++ b/docs/test-results/heltec_v3_full_memory_2026-10-19.md
@@ -0,0 +1,96 @@
+<!-- meshcore-hosted-doc-link:start -->
+<p class="meshcore-hosted-doc-link"><a href="https://mikecarper.github.io/MeshCore/test-results/heltec_v3_full_memory_2026-10-19/">View this page on MeshCore Docs</a>.</p>
+<!-- meshcore-hosted-doc-link:end -->
+
+# Heltec V3 Full memory qualification, 2026-10-19
+
+Canonical V3 Full now passes its flash and runtime-RAM gates with **6,032 bytes
+of modeled RAM margin**, retaining its existing features and capacities.
+**Physical testing is pending:** no V3 is currently exposed to the VM, and no
+board was flashed during this work.
+
+Measured source: [`eb9259f2a97113b1d482ca9610661fb24c1c8e98`](https://github.com/mikecarper/MeshCore/commit/eb9259f2a97113b1d482ca9610661fb24c1c8e98).
+The [machine-readable evidence](heltec_v3_full_memory_2026-10-19.json) records
+package hashes, allocation components, capabilities and linked ARM checks.
+
+## What changed
+
+V3 Full uses the existing NimBLE-Arduino 2.5.1 Companion adapter. It preserves
+the authenticated NUS service, PIN, address/stealth controls and frame queues.
+The canonical profile retains one active BLE session, **15 saved phones and
+30 CCCD records** for NUS TX and Service Changed subscriptions. This does not
+reuse the smaller default bond store from the optional trial configuration.
+
+**Bluetooth upgrade step:** existing Bluedroid bonds are not migrated. Forget
+the previous pairing in the phone's Bluetooth settings and pair again after
+installing this image. The PIN setting remains available as before.
+
+Non-PSRAM ESP32 Full also uses a bounded external-source Merkle cache. It keeps
+32-leaf groups and their roots, then rereads the selected group to generate the
+same wire proof. It supports the same 4,096 source blocks, folder capture,
+raw/host-encoded/device-encoded serving, getter requests and transport protocols.
+A proof step issues at most one metadata transaction; jobs survive partial
+progress and radio backpressure.
+
+The complete workspace is 1,004 bytes in the 32-bit Xtensa layout, with a
+production `sizeof` assertion enforcing a 1,536-byte bound. Its output block and
+allocation allowance remain separate. The legacy 16 KiB source-leaf allocation
+is absent on this path. PSRAM, nRF52 and other unqualified paths retain their
+existing implementation, as do explicit larger custom source limits.
+
+The RAM check accounts for this smaller real allocation. The 16 KiB transient
+margin, Bluetooth/WiFi allowances, MQTT admission, stacks and minimum floors
+remain unchanged. There is no new OTA queue loan or reduction in offline frames.
+
+## Measured image
+
+Both comparisons use the canonical release-length version, Cascade profile and
+USA Cascade preset. The baseline is `31e693ec2`; it already failed admission
+before the shared contact-memory changes.
+
+| Measurement | Baseline | Final |
+| --- | ---: | ---: |
+| Internal capacity after linking | 177,144 | 189,616 |
+| Modeled allocation requirement | 198,432 | 183,584 |
+| Modeled margin | -21,288 | **6,032** |
+| Application bytes | Not admitted | 2,114,744 |
+| Application-slot capacity | — | 3,342,336 |
+| Application-slot margin | — | 1,227,592 |
+
+The existing V3 Full recipe retains **100 contacts, 40 channels, 256 offline
+frames and one MQTT runtime slot**. These limits were not reduced by this fix.
+All 24 linked/package feature checks pass, alongside the Full profile marker.
+USB, Bluetooth, simultaneous WiFi, direct MQTT, WebConfig, logging and OTA remain
+in the image. Modeled capacity is not a running free-heap or load measurement.
+
+Final ELF SHA-256: `3a56805b2d0216026c3710e149db43dedb677684e47ad08ebfe748094c1de55b`.
+Application SHA-256: `c4f276095626560abc4c6875216c147d2fae292bf5c514e5029ef7d03454d3ce`.
+Every file bound by the packaged memory manifest was hash-verified.
+
+## Verification
+
+- New proof tests pass under ASan/UBSan, with 22,240 exact wire-proof comparisons,
+  partial/failing reads, negotiated transport-size changes, allocation failure,
+  cancellation, idle cleanup, folder capture, getter bytes and backpressure.
+- The RAM-policy suite passes 47 tests. Ten adapter/variant tests pass, including
+  real adapter behavior under ASan/UBSan and the V3 DIO policy.
+- Existing cold-buffer tests pass on four platform configurations. Serial
+  deadlines and source-only folder-resume tests each pass two test methods.
+- Clean-source canonical RAK4631 Full and RAK3x72 USB also build. RAK4631 retains
+  6,716 modeled RAM bytes and 592 application bytes of margin; RAK3x72 retains
+  7,112 RAM bytes and four application bytes. Their existing hard gates remain.
+- The final-source RAK4631 ELF passes linked RFC8032 crypto, four OTA workspace
+  lifetimes and every page of all 879 Reader references. Those checks bind to
+  its own ELF hash in the JSON rather than to an earlier contact-memory image.
+
+PlatformIO commands ran one at a time in a clean checkout. Reproduce the V3
+package with:
+
+```sh
+bash build.sh build-firmware Heltec_v3_companion_radio_full --firmware-version v1.18.0.1-halo-keymind-cascade-dev --radio-preset usa-cascade-fixed --profile cascade --require-ota
+```
+
+Hardware acceptance still requires the physical V3: preserve its flash and
+settings, then check boot, live heap under simultaneous transports, contacts,
+Bluetooth pairing/reconnect, MQTT, WiFi administration, OTA and persistence.
+These software results do not establish that hardware acceptance.
diff --git a/docs/test-results/index.md b/docs/test-results/index.md
index e39a1986a..4a0776a92 100644
--- a/docs/test-results/index.md
+++ b/docs/test-results/index.md
@@ -60,6 +60,8 @@ Completed validation reports, experiments, and test guides are collected here. O
 
 ## Build, storage, memory, and checklists
 
+- [Shared contact RAM savings and RAK4631 Full qualification, 2026-10-19](contact_memory_2026-10-19.md)
+- [Heltec V3 Full memory qualification, 2026-10-19](heltec_v3_full_memory_2026-10-19.md)
 - [Personal room mailbox checks](room_mailboxes.md)
 - [Stock nRF52 bootloader version audit](bootloader_version_stock_audit.md)
 - [CLI setting dispatch audit](cli_settings_audit.md)
diff --git a/docs/test-results/nimble_companion_trial.md b/docs/test-results/nimble_companion_trial.md
index 932f9fede..3fe8806af 100644
--- a/docs/test-results/nimble_companion_trial.md
+++ b/docs/test-results/nimble_companion_trial.md
@@ -4,6 +4,12 @@
 
 # ESP32-S3 NimBLE Full Companion trial
 
+Canonical Heltec V3 Full now uses the same pinned NimBLE backend, preserving
+its existing 15 saved phones and both notification subscriptions per phone.
+Its [Full memory qualification](heltec_v3_full_memory_2026-10-19.md) is separate
+from the optional trials below. Switching from Bluedroid requires forgetting
+the old phone pairing and pairing again; stored bonds are not migrated.
+
 These optional builds use NimBLE-Arduino 2.5.1 with the existing ESP32 Arduino
 2.0.17 toolchain. They are hardware qualification builds, outside the normal
 release matrix and firmware picker.