Services editor: path-exact filesystem check

Rework the FS check from FID-level to path-exact:

- SERVICES_FS_MAP now maps a feature to symbolic roles (registry names),
  not FIDs; the (name, root) -> path index resolves each role to its
  unambiguous canonical path (same-FID files in other DFs - EF.SAI vs
  EF.PBR, EF.AST - resolve separately).
- Per-tree declaration: SST -> MF, UST/EST -> ADF.USIM, IST -> ADF.ISIM,
  with a DF.TELECOM fallback for USIM/ISIM roles whose DFs live under
  DF.TELECOM (MMS storage, MCPTT, V2X, A2X), except the GSM-application
  mapped copies (ADN/EXT1/ECCP).
- The report carries the path (and declaring tree) for missing and
  present-but-undeclared, plus an honest "unchecked" bucket for roles
  with no path yet (DF.GRAPHICS/IMG, SIM DF.SoLSA/MExE copies,
  EF.3GPPPSDATAOFFservicelist).
- efDfFromPath maps A000000087100B -> ADF.USIM-NON-IMSI.

Frontend 1126 + Python 1091 tests green.  (Version/sw bump still
deferred for the decoded-editing batch.)

frontend/tests/ef_decode.test.js

@@ -400,6 +400,9 @@ test('efDfFromPath folds an ADF AID root onto its symbolic ADF name', () => {
 	assert.strictEqual(efDfFromPath('a0000000871002ff49ff0589/6fad'), 'ADF.USIM');
 	assert.strictEqual(efDfFromPath('A0000000871004/6F07'), 'ADF.ISIM');
 	assert.strictEqual(efDfFromPath('A0000000871004FF49FF0589/6F07'), 'ADF.ISIM');
+	// the non-IMSI USIM (TS 31.102 Annex N) repeats the ADF.USIM file set
+	assert.strictEqual(efDfFromPath('A000000087100B/6F38'), 'ADF.USIM-NON-IMSI');
+	assert.strictEqual(efDfFromPath('a000000087100bff49ff0589/6f38'), 'ADF.USIM-NON-IMSI');
 	// an unrelated AID is not an ADF name: it passes through as itself
 	assert.strictEqual(efDfFromPath('A0000000090003FFFF/6F07'), 'A0000000090003FFFF');
 	assert.strictEqual(efDfFromPath('F0414C46416001/6F07'), 'F0414C46416001');