feat(hashline): updated grammar and documentation for unified put and cut syntax

- Update Lark grammar to support the unified put, cut, move, and remove operations.
- Update documentation and prompts to reflect canonical inclusive range separators and named register rules.

packages/coding-agent/CHANGELOG.md

@@ -9,6 +9,7 @@
 ### Changed
 
 - Moved the display-reset default chord (`app.display.reset`) from `Ctrl+L` to `Alt+L` to make room for the live-mode toggle.
+- Updated the hashline edit tool, streaming preview, and plan-mode guidance for the unified `PUT`/`CUT` grammar, `.=` ranges, and named registers.
 
 ## [17.2.1] - 2026-07-30
 

packages/hashline/CHANGELOG.md

@@ -9,7 +9,16 @@
 ### Added
 
 - Added named register support (`@reg`) and span paste capabilities to clipboard operations
-- Added auto-shifting for uniformly omitted base indents under brace openers
+- Added conservative recovery for uniformly omitted replacement indents that would otherwise escape an immediately preceding brace opener, while preserving intentional indentation-only edits
+
+### Changed
+
+- Made `.=` the canonical inclusive range separator while retaining legacy separator variants as lenient input
+- Unified replacement, insertion, register paste, block, head/tail, move, and removal headers under the composable `PUT`, `CUT`, `MV`, and `REM` grammar
+
+### Fixed
+
+- Recovered common model output mistakes including numbered read rows, summarized ranges, diff-style old/new rows, empty `PUT` deletes, harmless `CUT` colons, and single-line span shorthand without weakening overlap or stale-snapshot guards
 
 ## [17.2.0] - 2026-07-30
 

packages/hashline/README.md

@@ -51,7 +51,7 @@ Inside a section:
 - `PUT A*:` — replace the syntactic block beginning on line A.
 - `PUT <A:` / `PUT >A:` — insert following body rows before/after line A (`<1` = head, `>$` = tail).
 - `PUT >A*:` — insert following body rows after the resolved block's last line.
-- `PUT <A` / `PUT >A` / `PUT A.=B @name` — paste a captured register at a gap or over a range (no `:` header, no body rows; `@name` optional at gaps).
+- `PUT <A` / `PUT >A` / `PUT A.=B @name` / `PUT A* @name` — paste a captured register at a gap, over a range, or over a resolved block (no `:` header or body rows; `@name` is optional only at gaps).
 - `CUT A.=B` / `CUT A*` — delete concrete lines or a resolved block and capture them (anonymous, or `@name` when given).
 - `REM` — delete the whole file named by the section header.
 - `MV DEST` — move/rename the section file to `DEST` (optionally after line edits).

packages/hashline/src/grammar.lark

@@ -8,12 +8,12 @@ file_hash: /[0-9A-F]{4}/
 filename: /[^#\r\n]+/
 
 hunk: put_hunk | cut_hunk | rem_hunk | mv_hunk
-put_hunk: "PUT " put_locator register? ":" LF body*
+put_hunk: "PUT " put_locator ":" LF body+
         | "PUT " put_locator register LF
         | "PUT " gap_locator LF
 cut_hunk: "CUT " cut_locator register? LF
 rem_hunk: "REM" LF
-mv_hunk: "MV " filename LF body*
+mv_hunk: "MV " filename LF
 
 put_locator: range | LID "*" | gap_locator
 cut_locator: range | LID "*"

packages/hashline/src/prompt.md

@@ -9,7 +9,7 @@ Every file section starts `[PATH#TAG]`. `TAG` = 4-hex snapshot tag from your lat
 `PUT N*:` — replace the syntactic block BEGINNING on line N; its closing line is resolved for you.
 `PUT <N:` / `PUT >N:` — insert body rows before / after line N (`PUT <1:` = file head, `PUT >$:` = file tail).
 `PUT >N*:` — insert body rows after the END of the block beginning at N (at sibling depth). Append inside a block → `PUT >M:`.
-`PUT <N` / `PUT >N` / `PUT N.=M @name` — paste a captured register at a gap or over a range (no `:` header, no body rows). Unlabeled `PUT` pastes the anonymous register; `@name` selects a named register.
+`PUT <N` / `PUT >N` / `PUT N.=M @name` / `PUT N* @name` — paste a captured register at a gap, over a range, or over a resolved block (no `:` header, no body rows). Unlabeled gap `PUT` pastes the anonymous register; span/block paste requires `@name`.
 `CUT N.=M` / `CUT N*` — delete lines N through M / block N and capture them (anonymous, or `@name` when given).
 `REM` — delete the whole section file. `MV DEST` — move/rename to `DEST` (quote paths with spaces); edits above `MV` land on the source first, final content written at `DEST`.
 Single line: `PUT N.=N:` / `CUT N.=N`. Range = ORIGINAL lines touched (`N.=M`, inclusive); body length irrelevant.