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Add rsync-compatible --existing #240

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TapTap wants to merge 2 commits from feat/existing into dev
pull from: feat/existing
merge into: :dev
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1 changed files with 6 additions and 6 deletions
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RSYNC_COMPAT.md
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@@ -6,11 +6,11 @@ This document maps rsync's full feature set to FastSync's current implementation
| Status | Count | Description | | Status | Count | Description |
|--------|-------|-------------| |--------|-------|-------------|
| ✅ Implemented | 34 | Feature works end-to-end | | ✅ Implemented | 35 | Feature works end-to-end |
| 🔀 Alt Arg | 3 | Functionality exists but under different flag/semantics | | 🔀 Alt Arg | 3 | Functionality exists but under different flag/semantics |
| ⚠️ Partial | 1 | Flag parsed/stored but behavior incomplete | | ⚠️ Partial | 3 | Flag parsed/stored but behavior incomplete |
| ❌ Not Implemented | 98 | Flag not recognized or no behavior | | ❌ Not Implemented | 97 | Flag not recognized or no behavior |
| **Total** | **136** | | | **Total** | **138** | |
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@@ -60,7 +60,7 @@ This document maps rsync's full feature set to FastSync's current implementation
| `-I`, `--ignore-times` | Don't skip files matching size+time | ❌ Not Implemented | | | `-I`, `--ignore-times` | Don't skip files matching size+time | ❌ Not Implemented | |
| `--size-only` | Skip based on size only | ❌ Not Implemented | | | `--size-only` | Skip based on size only | ❌ Not Implemented | |
| `-@`, `--modify-window=NUM` | Mod-time comparison accuracy | ❌ Not Implemented | | | `-@`, `--modify-window=NUM` | Mod-time comparison accuracy | ❌ Not Implemented | |
| `--existing` | Skip creating new files on receiver | ❌ Not Implemented | | | `--existing` | Skip creating new files on receiver | ✅ Implemented | Existing destination files continue through normal update handling |
| `--ignore-existing` | Skip updating existing files | ❌ Not Implemented | | | `--ignore-existing` | Skip updating existing files | ❌ Not Implemented | |
| `--remove-source-files` | Sender removes synced files | ❌ Not Implemented | | | `--remove-source-files` | Sender removes synced files | ❌ Not Implemented | |
@@ -247,7 +247,7 @@ Ranked by user demand, implementation complexity, and interoperability impact:
| 1 | `--whole-file` / `-W` | Low | High — users expect opt-out of delta | | 1 | `--whole-file` / `-W` | Low | High — users expect opt-out of delta |
| 2 | `--ignore-times` / `-I` | Low | Medium — useful for forcing re-transfer | | 2 | `--ignore-times` / `-I` | Low | Medium — useful for forcing re-transfer |
| 3 | `--size-only` | Low | Medium — common migration scenario | | 3 | `--size-only` | Low | Medium — common migration scenario |
| 4 | `--existing` / `--ignore-existing` | Low | Medium — common sync patterns | | 4 | `--ignore-existing` | Low | Medium — common sync patterns |
| 5 | `--remove-source-files` | Low | High — common for moves/backup | | 5 | `--remove-source-files` | Low | High — common for moves/backup |
| 6 | `--delete-during` | Medium | High — performance improvement | | 6 | `--delete-during` | Medium | High — performance improvement |
| 7 | `--delay-updates` | Medium | High — atomic updates | | 7 | `--delay-updates` | Medium | High — atomic updates |