[JC-000]

README gains one bullet (under "What this client does NOT authenticate", beside the pin bullet) plus a cross-reference from the G-prompt paragraph, and "latest is" is bumped to v0.5.1. Docs-only; no hardware run (the docs exception to "run the rigs"). PRG unaffected.

Claims and where each was verified (red-green for docs)

Claim	Verified at
Default dir is /USB1	Makefile:297
Files are TRUST.A/TRUST.B	Makefile:307; src/net/uci/trust_store.s:626-628
TRUST.P is the signed bundle, needs TRUST_BUNDLE=1	Makefile:314-337
Released uci-onchip / uci-comb are TRUST_STORE=1, default dir, no pin/bundle	tools/package/_common.sh:26-27; README:191
Later fetches refuse a changed key unless accepted	trust_policy.s:51 ("ACCEPT ON RETRY? A=YES")
Unreadable store: TRUST FAIL nn, then CONTINUE UNPINNED? Y/N	trust_policy.s:32-34, 171-180, 434, 538
nn is one hex byte; 02 = path/medium does not exist	trust_policy.s:175-178; trust_store.inc:58; trust_store.s:529-538; scan fails on slot-A NOPATH: trust_store.s:385-397
Y: that fetch runs unpinned, never records; the banner ** UNPINNED: KEY NOT CHECKED ** prints twice (before the dial :474, after the result :275). Two Y prompts: after TRUST FAIL (:178) and after KEY CHANGED (:350)	trust_policy.s:464-475, 539; :42, :55
Other key: NOT DIALLED, no connect	trust_policy.s:178-184, 435
TRUST SAVE FAIL nn / TRUST STORE FULL: nothing recorded; new host stays unpinned (no banner); an accepted key change is not saved, old key still applies (next G says KEY CHANGED again)	trust_policy.s:409-415 (STORE FULL), :416-422 (SAVE FAIL), i.e. :409-422; TS_MAX_RECS=32 trust_store.inc:33; rev-303 round 2
Another dir: TRUST_STORE_DIR=/SD with the product's own args	Makefile:297-307; _common.sh:26-27
Dir must already exist (client never creates one)	no mkdir in src/net/uci/uci_dos.s
Absolute path of [A-Za-z0-9_.-] components	Makefile:304-305
Dir at most 41 chars	trust_store.s:58 asserts full string DIR/TRUST. <= 48; Makefile:307
TRUST_STORE=1 is UCI-only	Makefile:301-303
Volume name on a C64 Ultimate	not asserted: README says to check the Ultimate's file browser
"latest is v0.5.1"	tag v0.5.1 exists (git tag)

Checks run

• python3 tools/test_reserved_test_host.py (only test scanning README text): 9/9 on master and 9/9 at head 12968d1.
• No other README-consistency test exists.

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