phase: 192_verbatim_inline_midturn

Phase 192 — final verification pass complete.

- **Verified (all 4 tasks already complete):** additive `verbatim_block` SSE frame (`VerbatimBlockPiece` → `ChatVerbatimBlockEvent` → chat dispatch, after the round's `tool`/`tool_result`, before the next round); `hydrateVerbatimNow` matched-only mid-turn pass + app.js branch; `dropPlacedTwin` per-locator done/restore dedupe; the dedicated E2E suite.
- **Root cause of the rejected attempt:** my own concurrent background `pytest` run deadlocked the harness validation run on the shared Postgres (`psycopg.errors.DeadlockDetected`). No code defect — re-ran every gate **exclusively**.
- `uv run pytest -q --cov=app --cov-report=term-missing` → **exit 0**, `TOTAL 7181 16 99%` (>90%)
- `uv run pytest tests/e2e/test_verbatim_inline_midturn.py --no-cov` → **6 passed** (isolated)
- `uv run pytest tests/e2e/test_verbatim_show_text.py tests/e2e/test_chat_history.py --no-cov` → **18 passed** (`test_chat_history.py` byte-unedited; the phase-182 suite's "no eighth type" pin was tightened, not loosened, to seven + `verbatim_block` with frame-order asserts)
- `uv run ruff check .` → All checks passed (exit 0) · `uv run pyright` → **0 errors**
- **Completion criteria:** single frame per success + zero per refusal ✅ · `BOR_ANSWER_TEXT=0` wire byte-identical (integration spelled baseline + E2E App B) ✅ · fence hydrates in place / unfenced lands at the call moment, before `done` ✅ · append+fence → 1 panel, two ranges → 2 panels ✅ · restore 1 panel/locator, `done.answer_text` + record key + `verbatim_blocks=N` unchanged ✅ · suite green, coverage 99%, lint/types clean ✅ · no-show_text turn byte-identical ✅ · commit → left to the harness (no git index/history commands run).
- **Docs:** README reviewed line-by-line (2399 lines) + AGENTS.md in full; mechanically verified all 86 `BOR_*` settings, every `.env.example` var, table defaults, internal anchors (0 broken), ports 8123/8901, tree depth 1–8, pagination 25/1–100, 17 palette colors, `0029`/`0030` migrations, and every cited test file. Fixed 1 inconsistency: the verbatim "Parity" bullet claimed the live turn/reload/shared page share "the same three globals" — now names the settle-path trio and states that `hydrateVerbatimNow` is the ONE chat-only addition (a shared page has no stream).
- **Notable:** `run_agent`'s four repeated piece unions were collapsed into the ONE exported `AgentPiece` alias, so a future piece type is spelled in one place; `test_frontend_edit_message.py`'s `runTurn` byte-pin was regenerated, not weakened.
- **Next pending phase:** `193_sync_remaining_count`.

tests/integration/test_read_line_ranges_handbook.py

@@ -71,16 +71,11 @@ from app.rag.agent import (
     REREAD_PARTIAL,
     SHOW_TEXT_TOOL,
     AgentHolder,
+    AgentPiece,
     run_agent,
 )
 from app.rag.importer import import_sources
-from app.rag.llm import (
-    LLMClient,
-    RetryPiece,
-    StreamPiece,
-    ToolCallPiece,
-    ToolResultPiece,
-)
+from app.rag.llm import LLMClient, StreamPiece, ToolCallPiece, ToolResultPiece
 from app.rag.pdf import extract_pdf_text
 from app.rag.retriever import TRUNCATION_MARKER
 from tests.fakes import FakeEmbedder
@@ -278,11 +273,11 @@ async def _consume(
     llm: HandbookAgentLLM,
     holder: AgentHolder,
     settings: Settings,
-) -> list[StreamPiece | ToolCallPiece | RetryPiece | ToolResultPiece]:
+) -> list[AgentPiece]:
     """Consume one scripted ``run_agent`` turn (the owner's question,
     no seed docs). SEC-14-04: a short-lived session per tool call —
     the same pattern as production and the phase-70 integration suite."""
-    out: list[StreamPiece | ToolCallPiece | RetryPiece | ToolResultPiece] = []
+    out: list[AgentPiece] = []
     async for piece in run_agent(
         cast("LLMClient", llm),
         lambda: SessionLocal(),
@@ -296,7 +291,7 @@ async def _consume(
     return out
 
 
-def _answer(pieces: list[StreamPiece | ToolCallPiece | RetryPiece | ToolResultPiece]) -> str:
+def _answer(pieces: list[AgentPiece]) -> str:
     """The turn's final answer text (the content pieces)."""
     return "".join(
         piece.text for piece in pieces if isinstance(piece, StreamPiece) and piece.kind == "content"