Docs: document contact picker, combined Contacts list, build memory summary

- README: SMS bullet mentions picking a recipient from contacts.
- MANUAL: contact picker in the compose flow, a Contacts-list section (all
  types + '#' to cycle the filter), and a current version example.
- TOOLS: note the per-region memory-usage summary printed after each build.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

MANUAL.md

@@ -159,6 +159,11 @@ Talkgroups/contacts, timeslots, colour codes, RX groups, and hotspot mode, all p
 upstream OpenGD77. The AMBE voice codec is merged in at flash time (see
 [`TOOLS.md`](TOOLS.md)).
 
+### Contacts list — 🟢 [FreeTRX]
+**Menu → Contacts** lists all contact types together under the title "Contacts"
+(instead of defaulting to the group filter). Press **`#`** to cycle the filter:
+all → groups → private → all-call → all.
+
 ### DMR reliability fix — 🟢 [FreeTRX]
 FreeTRX resolves a hard-fault (freeze needing a battery pull) on the DMR path that
 affected recent self-built OpenGD77 revisions — the codec is called through C
@@ -202,7 +207,7 @@ second or two a message is on air; hotspot mode is unaffected.
 ## About & versioning — 🟢 [FreeTRX]
 
 **Menu → Firmware info** shows the **FreeTRX version** (semantic versioning, e.g.
-`FreeTRX v0.4.0`) alongside the git commit ID. Pre-1.0 builds are published as
+`FreeTRX v0.10.0`) alongside the git commit ID. Pre-1.0 builds are published as
 pre-releases. See [`CHANGELOG.md`](CHANGELOG.md) for the full history.
 
 ---

README.md

@@ -36,9 +36,10 @@ FreeTRX keeps OpenGD77's core (DMR/FM, hotspot, CPS compatibility) and adds:
 - **Screen dimming** — optionally dim the backlight to 100 / 50 / 30 / 15 % after
   inactivity (Auto backlight mode); new setting in Display Options.
 - **DMR text messages (SMS)** — send and receive text messages on the radio,
-  compatible with BrandMeister, hotspots and OEM radios. Compose on the keypad,
-  inbox/sent boxes, quick-text templates, delivery confirmation and an
-  incoming-message popup (see the manual for details).
+  compatible with BrandMeister, hotspots and OEM radios. Compose on the keypad
+  (or pick the recipient from your contacts), inbox/sent boxes, quick-text
+  templates, delivery confirmation and an incoming-message popup (see the manual
+  for details).
 - **Theme presets** — pick a colour theme on the radio: **Custom** (CPS-editable,
   default), **BASIC 80s** (Commodore 64), **Terminal** (green-on-black),
   **Vertexic** (amber/orange), **Red**, **Neon 80s** (multi-colour synthwave),

TOOLS.md

@@ -34,6 +34,10 @@ Output: `MDUV380_firmware/build/Open<platform>.bin` (the flashable, FM-only imag
 codec is merged in at flash time — see below). The build is always clean (`rm -rf build`),
 so building one platform overwrites the other's output.
 
+Each build finishes with a **memory-usage summary** — used, size and free bytes for the
+FLASH (code), RAM and CCMRAM regions — so the remaining headroom for new features is
+visible at a glance.
+
 ---
 
 ## 3. Flashing