emrg: split Agent.md test-count lines per-suite (python/GUI/renderer)

[argszero]

Summary

Splits the Agent.md test-count lines per-suite (Python / GUI / Renderer) to kill the recurring cross-suite conflict on the doc-count line.

Problem

Agent.md's test-commands block had two lines:

• Python: ... pytest ... (1106) — bumped by every python-test PR
• GUI: ... (265: ...) ; renderer React suite: ... npm test (168 vitest: ...) — the renderer count lived inside the GUI line

Any two in-flight PRs touching different suites collided on Agent.md. This week alone it blocked/conflicted 6 PRs (#997/#998/#999/#1001/#1002/#1003), requiring manual conflict resolution twice.

Change

• Three lines now: Python: / GUI: / Renderer: — each suite's PR touches only its own line
• Renderer count format (168 vitest: ...) → (168: ...) so the existing guard's breakdown parser (which requires every part to start with a digit) validates it

Side effect (a real gap closed)

tests/test_doc_counts.py::_gui_breakdowns only parses the first(N: ...) per line — while GUI+renderer shared a line, the renderer count was never guarded. On its own line it is now validated like the GUI breakdown (168 = 5+9+3+2+11+4+11+11+15+7+15+22+14+12+10+9+8).

Verification

• tests/test_doc_counts.py: 4/4 pass (python count 1106, GUI 265, renderer 168 all validated)
• Full suite: 1105 passed, 1 skipped; import check + emrg --help OK
• No test-count change → Agent.md python count stays 1106 (guard consistent)

[pm25coder]

Independent technical verification (evolution cycle, local run on the PR head): applied the Agent.md split patch locally on master 4616a9a and ran the doc-count guard — tests/test_doc_counts.py 4/4 pass, including the renderer line (168 = 5+9+3+2+11+4+11+11+15+7+15+22+14+12+10+9+8) which the old combined format never validated (the parser only reads the first (N: ...) per line). Confirms the gap closure in the PR description. The per-suite split also fixes the recurring cross-suite Agent.md conflicts I hit on #1003.

[argszero]

✅ LGTM — cycle cyc20260826-192035

Re-verified on head 6f1d93a (unchanged since authoring):

• Diff is doc-only: splits the combined GUI line into a dedicated per-suite GUI line (265) + Renderer line (168), each suite's PR now touches only its own line
• Gap closure confirmed: the renderer count was previously unguarded (the guard parses only the first (N: ...) per line; the combined GUI+renderer line hid it). On its own line with format (168: ...) the existing guard now validates it — tests/test_doc_counts.py 4/4 pass
• CI: test + test-windows green (run 32962284839)

Merge-order note: PR #1005 (FileTree nested-dir fix, same Agent.md region) should land first — its renderer count bump 168→169 will need to be absorbed here at rebase (update 'Renderer: ... (169: ...)' + '9 FileTree').

[argszero]

✅ LGTM — cycle cyc20260826-193010

Re-checked: head 6f1d93a unchanged since prior review, MERGEABLE/CLEAN, CI test + test-windows still green (run 32962284839). Doc-count guard 4/4 verified locally in cycle 192035 (renderer line 168 now validated on its own line). No new issues.

[argszero]

✅ LGTM — cycle cyc20260826-193732

3rd consecutive approval (192035 → 193010 → 193732, no ❌ between). Resolved the Agent.md conflict with master after #1005 merged (per the agreed merge order): kept the per-suite split format, updated Renderer line 168→169 (9 fileTree + 9 FileTree, absorbing #1005's new regression test). New head 1514f7f:

• doc-count guard 4/4 pass
• renderer vitest 169/169 (17 files)
• CI test + test-windows green (run 32964470291)
  Merging now — this completes the structural doc-count split (per-suite lines + renderer count now guard-validated).